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 Alex Morgan, PC Hardware Editor
12 min read5 products evaluated

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.

Lowest Price Here
Bnnwa Multi-Device Keyboard with TouchpadUndercutting 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)
Longest Battery Life
Logitech Pebble Keys 2 K380sThe 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)
Also Consider
Bnnwa K905 Rechargeable Touchpad KeyboardA 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)
Strong Alternative
Logitech MX Keys MiniBacklighting 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)
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.
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.
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.
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.
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.
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.

- 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.
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.
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 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.
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 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
| Priority | Consider | Why |
|---|---|---|
| Spending as little as possible, with the K380s the next step up | Bnnwa multi-device | Undercutting the K380s on price when we checked |
| Offices where the keyboard stays on all day | K380s | The longest battery life here (up to 36 months) |
| Buyers who want built-in 500mAh rechargeable battery | Bnnwa K905 | A built-in 500mAh rechargeable battery |
| Buyers who want backlighting that turns on as your hands approach | MX Keys Mini | Backlighting that turns on as your hands approach |
| Spending more than the MX Keys Mini costs for the fullest feature set in this group | MX Mechanical | The top of this price range, adding smart backlighting that adjusts to room light |
Scroll sideways to see every column.

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.
| Keyboard | Battery (backlight off) | Paired devices | Layout | Key type |
|---|---|---|---|---|
| Bnnwa multi-device | Not listed | 3 devices | Slim with touchpad | Low-profile keys |
| K380s | up to 36 months | 3 devices | Compact, no number pad | Quiet scooped round keys |
| Bnnwa K905 | Not listed | 3 devices | Compact with touchpad | Low-profile keys |
| MX Keys Mini | up to 5 months | 3 devices | Compact, no number pad | Spherically dished Perfect Stroke keys |
| MX Mechanical | up to 10 months | 3 devices | Full-size, low-profile | Tactile 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 tier | Keyboards |
|---|---|
| Under $50 | Bnnwa multi-device, K380s, Bnnwa K905 |
| About $50 to $100 | MX Keys Mini |
| About $150 to $250 | MX Mechanical |

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.
Related Guides
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- Similar guideThe Best Gaming Keyboards Right Now
- ExplainerHow to Choose a Mechanical Keyboard
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- Also see: miceGaming Mouse Features Explained: What Is Worth Paying For?
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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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