Buying Guide

The Best External Keyboard for Laptop

Five keyboards compared, from the Bnnwa multi-device to the MX Mechanical, with the trade-offs of each named.

By , PC Hardware Editor

12 min read5 products evaluated

A desk setup with a keyboard, mouse and headset beside a monitor
Illustrative image

An external keyboard lets you raise the laptop screen to eye level and type at a normal height. These are ordered by how many devices each can pair with.

We sorted these picks by battery (backlight off), paired devices and layout, working from the makers' own data; if a maker skips battery (backlight off), the guide says so, and no figure here comes from our own testing.

Quick Picks

Which of the 5 picks to look at first. Tap a name for the full analysis.

  1. Lowest Price Here

    Bnnwa Multi-Device Keyboard with Touchpad

    Undercutting the K380s on price when we checked.

    Best for: Spending as little as possible, with the K380s the next step up.

    Check price for Bnnwa Multi-Device Keyboard with Touchpad on Amazon (opens in a new tab)
  2. Longest Battery Life

    Logitech Pebble Keys 2 K380s

    The longest battery life here (up to 36 months).

    Best for: Offices where the keyboard stays on all day.

    Check price for Logitech Pebble Keys 2 K380s on Amazon (opens in a new tab)
  3. Also Consider

    Bnnwa K905 Rechargeable Touchpad Keyboard

    A built-in 500mAh rechargeable battery.

    Best for: Buyers who want built-in 500mAh rechargeable battery.

    Check price for Bnnwa K905 Rechargeable Touchpad Keyboard on Amazon (opens in a new tab)
  4. Strong Alternative

    Logitech MX Keys Mini

    Backlighting that turns on as your hands approach.

    Best for: Buyers who want backlighting that turns on as your hands approach.

    Check price for Logitech MX Keys Mini on Amazon (opens in a new tab)
  5. Premium Pick

    Logitech MX Mechanical (Tactile Quiet)

    The top of this price range, adding smart backlighting that adjusts to room light.

    Best for: Spending more than the MX Keys Mini costs for the fullest feature set in this group.

    Check price for Logitech MX Mechanical (Tactile Quiet) on Amazon (opens in a new tab)

Our Picks

Lowest Price Here1 of 5

Bnnwa Multi-Device Keyboard with Touchpad

The Bnnwa multi-device stands out for switching between 3 devices, and it adds a touchpad lock with Fn.

Best for

Spending as little as possible, with the K380s the next step up.

Skip if

Its battery life is not published, which rules it out if you need that number.
Bnnwa Multi-Device Keyboard with Touchpad

Why we like it

Its ABS keycaps resist wear, and the slim, light body works with laptops, phones and tablets. No other pick in this guide offers a slim with touchpad layout; compare the Bnnwa K905, which has a compact with touchpad layout. Like the Bnnwa K905, it has a low-profile keys key type, while the K380s uses a quiet scooped round keys key type.

It also offers 12 multimedia shortcuts. Check that your computer has Bluetooth, or use the included receiver if there is one. It undercut the K380s and every other pick on price at the time of writing. The maker doesn't give its battery life; if that figure matters, the K380s runs for up to 36 months.

Key specs

Paired devices
3 devices
Layout
Slim with touchpad
Key type
Low-profile keys
Connection
Bluetooth and 2.4GHz

Pros

  • Switching between 3 devices
  • Touchpad lock with Fn
  • 12 multimedia shortcuts
  • Slim with touchpad layout, the only one here

Cons

  • No published battery life

Longest Battery Life2 of 5

Logitech Pebble Keys 2 K380s

Logitech's K380s is a compact Bluetooth keyboard with round, quiet scooped keys that pairs with three devices.

Best for

Offices where the keyboard stays on all day.

Skip if

If budget leads, the Bnnwa multi-device was cheaper at our last price check.
Logitech Pebble Keys 2 K380s

Why we like it

Logitech offers up to 36 months on its batteries, and the Fn keys can be customised in Logi Options+. Nothing else here matches its up to 36 months battery life; the MX Mechanical comes closest at up to 10 months. You get a quiet scooped round keys key type here, which sets it apart from the Bnnwa K905 and its a low-profile keys key type.

It also offers a 3-year battery life claim and auto-sleep. Check that your computer has Bluetooth, or use the included receiver if there is one. It supports Windows and macOS layouts, which helps if you switch between computers. It was priced above the Bnnwa multi-device and below the Bnnwa K905 at the time of writing.

Key specs

Battery (backlight off)
up to 36 months
Paired devices
3 devices
Layout
Compact, no number pad
Key type
Quiet scooped round keys
Connection
Bluetooth, multi-OS

Pros

  • Up to 36 months per charge (backlight off)
  • Customizable Fn keys in Logi Options+
  • 3-year battery life claim
  • Auto-sleep

Cons

  • Costs more than the Bnnwa multi-device at the time of writing

Also Consider3 of 5

Bnnwa K905 Rechargeable Touchpad Keyboard

Bnnwa's rechargeable keyboard pairs with three devices over a receiver and two Bluetooth channels.

Best for

Buyers who want built-in 500mAh rechargeable battery.

Skip if

The maker gives no battery life, so skip it if that figure decides your choice.
Bnnwa K905 Rechargeable Touchpad Keyboard

Why we like it

It uses scissor keys. A 500mAh rechargeable battery removes the need for AAA cells, and it pairs with up to three devices over 2.4GHz and Bluetooth. The trackpad sits beside the keys.

Its scissor-switch keys type quietly with a short travel, and Fn shortcuts switch between iOS, Windows, Android and macOS layouts. It is the only pick here with a compact with touchpad layout; the Bnnwa multi-device has a slim with touchpad layout instead. Like the Bnnwa multi-device, it has a low-profile keys key type, while the K380s uses a quiet scooped round keys key type.

It also comes with USB-C charging and connection to 3 devices at once. Check that your computer has Bluetooth, or use the included receiver if there is one. Its price falls between the K380s and the MX Keys Mini, based on our last check.

Key specs

Paired devices
3 devices
Layout
Compact with touchpad
Key type
Low-profile keys
Connection
2.4GHz and two Bluetooth channels

Pros

  • Built-in 500mAh rechargeable battery
  • USB-C charging
  • Connection to 3 devices at once
  • Compact with touchpad layout, the only one here

Cons

  • No published battery life
  • Costs more than the Bnnwa multi-device at the time of writing

The catch

Buyers who need a confirmed battery life should compare it with the K380s, which runs for up to 36 months.

Strong Alternative4 of 5

Logitech MX Keys Mini

The MX Keys Mini packs spherically dished Perfect Stroke keys into a compact Bluetooth LE board with no number pad.

Best for

Buyers who want backlighting that turns on as your hands approach.

Skip if

Skip it if battery life matters most to you; the K380s offers up to 36 months.
Logitech MX Keys Mini

Why we like it

Its backlight comes on as your hands approach, and dedicated dictation, mic-mute and emoji keys sit on the top row. Logitech publishes its carbon footprint at 10.78 kg CO2e, and its plastics include recycled material. On battery life it trails the group at up to 5 months, while the K380s runs for up to 36 months.

It also comes with USB-C charging. Check that your computer has Bluetooth, or use the included receiver if there is one. It supports Windows and macOS layouts, which helps if you switch between computers. On price it sat fourth of 5, between the cheaper Bnnwa K905 and the pricier MX Mechanical, at the time of writing.

Key specs

Battery (backlight off)
up to 5 months
Paired devices
3 devices
Layout
Compact, no number pad
Key type
Spherically dished Perfect Stroke keys
Connection
Bluetooth LE, multi-OS

Pros

  • Backlighting that turns on as your hands approach
  • Dictation, mic mute and emoji keys
  • USB-C charging

Cons

  • Battery life trails the K380s (up to 36 months)
  • Costs more than the Bnnwa multi-device at the time of writing

Premium Pick5 of 5

Logitech MX Mechanical (Tactile Quiet)

The MX Mechanical brings Tactile Quiet mechanical switches to Logitech's MX line, with low-profile keys that stay office-friendly.

Best for

Spending more than the MX Keys Mini costs for the fullest feature set in this group.

Skip if

If budget leads, the Bnnwa multi-device was cheaper at our last price check.
Logitech MX Mechanical (Tactile Quiet)

Why we like it

Its battery life with the backlight off is the longest here, up to 10 months. On battery life it sits mid-pack at up to 10 months: the K380s runs for up to 36 months, and the MX Keys Mini comes in at up to 5 months. It also comes with smart backlighting that adjusts to room light and Logitech Flow for moving between computers.

It pairs over Bluetooth or Logitech's Logi Bolt receiver; Bolt is not compatible with older Unifying receivers, so keep the one in the box. It supports Windows and macOS layouts, which helps if you switch between computers. It was the most expensive pick when we checked, so weigh what it adds over the MX Keys Mini.

Key specs

Battery (backlight off)
up to 10 months
Paired devices
3 devices
Layout
Full-size, low-profile
Key type
Tactile Quiet mechanical switches
Connection
Bluetooth or Logi Bolt, multi-OS
Wrist support
None

Pros

  • Up to 10 months per charge (backlight off)
  • Smart backlighting that adjusts to room light
  • Logitech Flow for moving between computers
  • The top of this price range, adding smart backlighting that adjusts to room light

Cons

  • Costs more than the Bnnwa multi-device at the time of writing

The catch

If device pairing is your priority, the Bnnwa multi-device (3 devices) is the stronger choice.

How We Chose

Alex Morgan compared the manufacturer specifications, connectivity, warranty terms and compatibility of every pick. Figures come from the makers unless a third-party source is named; we did not test these products ourselves.

A compact keyboard and mouse in front of an ultrawide monitor
A compact keyboard and mouse in front of an ultrawide monitor
How these picks were ranked
We set side by side five keyboards on battery life, device pairing, layout and key type as the makers state them. Nothing was tested in-house; 4 of the 5 fields compared are stated for every pick, while battery life has gaps.
The shared baseline
All 5, from the Bnnwa multi-device to the MX Mechanical, state device pairing, layout and key type.
Where the specs have gaps
The Bnnwa multi-device and the Bnnwa K905 give no battery life.
Price range
At our last check the picks ran from the Bnnwa multi-device (under $50) to the MX Mechanical ($150 to $250).

What to Look for in an External Keyboard for Laptop

Key buying criteria so you get the right fit the first time.

  1. Battery life

    The K380s tops battery life at up to 36 months and the MX Keys Mini sits lowest at up to 5 months. The K380s is the pick for battery life. The Bnnwa multi-device and the Bnnwa K905 give no battery life figure, so 3 of 5 picks are compared here.

  2. Features beyond the spec table

    The Bnnwa K905: USB-C charging. The MX Keys Mini: dictation, mic mute and emoji keys. The MX Mechanical: Logitech Flow for moving between computers.

    A close-up of a full-size keyboard with grey keycaps
    A close-up of a full-size keyboard with grey keycaps
  3. How much to spend

    Under $50 buys the Bnnwa multi-device, the K380s and the Bnnwa K905; $50 to $100 buys the MX Keys Mini; $150 to $250 buys the MX Mechanical at our last check.

  4. Match the pick to your priority

    Spending as little as possible, with the K380s the next step up: the Bnnwa multi-device. Offices where the keyboard stays on all day: the K380s. Spending more than the MX Keys Mini costs for the fullest feature set in this group: the MX Mechanical.

    A grey mechanical keyboard beside a mouse on a wooden desk
    A grey mechanical keyboard beside a mouse on a wooden desk
  5. Backlighting cuts battery life

    Battery claims usually assume the backlight is off. With it on, runtime can drop from months to days.

    If you want backlighting, prefer USB-C charging so a cable can top it up during the day.

How to Choose an External Keyboard for Laptop

By priority

PriorityConsiderWhy
Spending as little as possible, with the K380s the next step upBnnwa multi-deviceUndercutting the K380s on price when we checked
Offices where the keyboard stays on all dayK380sThe longest battery life here (up to 36 months)
Buyers who want built-in 500mAh rechargeable batteryBnnwa K905A built-in 500mAh rechargeable battery
Buyers who want backlighting that turns on as your hands approachMX Keys MiniBacklighting that turns on as your hands approach
Spending more than the MX Keys Mini costs for the fullest feature set in this groupMX MechanicalThe top of this price range, adding smart backlighting that adjusts to room light

Scroll sideways to see every column.

A mechanical keyboard with RGB-lit keycaps
A mechanical keyboard with RGB-lit keycaps

Key specs side by side

The K380s leads on battery life at up to 36 months, ahead of the MX Mechanical at up to 10 months. "Not listed" marks battery life where the Bnnwa multi-device and the Bnnwa K905 leave the figure out.

KeyboardBattery (backlight off)Paired devicesLayoutKey type
Bnnwa multi-deviceNot listed3 devicesSlim with touchpadLow-profile keys
K380sup to 36 months3 devicesCompact, no number padQuiet scooped round keys
Bnnwa K905Not listed3 devicesCompact with touchpadLow-profile keys
MX Keys Miniup to 5 months3 devicesCompact, no number padSpherically dished Perfect Stroke keys
MX Mechanicalup to 10 months3 devicesFull-size, low-profileTactile Quiet mechanical switches

Scroll sideways to see every column.

By price at the time of writing

At our last check the cheapest pick, the Bnnwa multi-device, sat in the under $50 tier, 3 tiers in all up to the MX Mechanical at $150 to $250; Amazon prices move, so recheck before buying.

Price tierKeyboards
Under $50Bnnwa multi-device, K380s, Bnnwa K905
About $50 to $100MX Keys Mini
About $150 to $250MX Mechanical
A mechanical keyboard with white keycaps in front of an ultrawide monitor
A mechanical keyboard with white keycaps in front of an ultrawide monitor

Frequently Asked Questions

How does the MX Mechanical compare with the K380s on battery life?

Between the top two, it is up to 36 months on the K380s against up to 10 months on the MX Mechanical, a 260% difference. The MX Keys Mini is at the other end of this group with up to 5 months. The Bnnwa multi-device and the Bnnwa K905 are left out of this ranking because their battery life isn't stated; 3 of 5 picks are ranked.

What makes the K380s the Longest Battery Life?

It carries the badge for the longest battery life here (up to 36 months). The MX Mechanical is next on battery life at up to 10 months, so this pick's up to 36 months is 260% further out. It is aimed at offices where the keyboard stays on all day.

Beyond the specs, what sets the Bnnwa multi-device and the K380s apart?

The Bnnwa multi-device: switching between 3 devices. The K380s: customizable Fn keys in Logi Options+. The Bnnwa K905: a built-in 500mAh rechargeable battery.

Should I pick the Bnnwa multi-device or the MX Mechanical?

The Bnnwa multi-device suits spending as little as possible, with the K380s the next step up; the MX Mechanical suits spending more than the MX Keys Mini costs for the fullest feature set in this group.

What else do the MX Keys Mini and the MX Mechanical offer?

The MX Keys Mini: USB-C charging. The MX Mechanical: Logitech Flow for moving between computers.

Bottom Line

Our first pick is the Bnnwa multi-device, chosen for undercutting the K380s on price when we checked. Look at the Bnnwa K905 for a built-in 500mAh rechargeable battery, the MX Keys Mini for backlighting that turns on as your hands approach and the MX Mechanical for the top of this price range, adding smart backlighting that adjusts to room light if those matter more to you.

Pair it with a laptop stand to get the screen up to eye level.

About the author

PC Hardware Editor

Alex covers PC hardware, monitors, components, upgrades and peripherals for The PC Journal, with a focus on helping readers understand specifications, compatibility and meaningful product trade-offs.

Covers: Monitors, Graphics cards, Processors, PC components, Peripherals, Upgrades and compatibility

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