I used the Satechi SM3 Slim Mechanical Backlit Bluetooth Keyboard and was surprised by how light it is for a full-sized board

Satechi proves that large can also mean lightweight

The Satechi SM3 mechanical keyboard against a blue background.
(Image: © Alex Blake / Future)

TechRadar Verdict

Satechi’s SM3 is a decent first mechanical keyboard from the company, but it suffers from heavy switches and a lack of alternative options. If you don’t mind that, its attractive design and lightweight frame make it worth considering.

Pros

  • +

    Attractive color options

  • +

    Lightweight and portable

  • +

    Switch between Windows and macOS layouts

  • +

    Low-profile design works well

  • +

    Decent gaming performance

Cons

  • -

    Switches feel a little heavy

  • -

    Only one switch option

  • -

    Typing angle is a little shallow

  • -

    No customisation app or QMK/VIA compatibility

Why you can trust TechRadar We spend hours testing every product or service we review, so you can be sure you’re buying the best. Find out more about how we test.

Satechi SM3: Two-minute review

The Satechi SM3 mechanical keyboard against a blue background.

(Image credit: Alex Blake / Future)

Satechi has been making Apple-esque accessories for a few years now, with keyboards, mice, charging docks and more on its roster. But in all that time, it’s never made a mechanical keyboard – until the SM3 came along.

Satechi has opted to kick off its mechanical range with a full-size board that features a numpad on its right-hand edge. It looks great and will fit in neatly with your Apple devices, but it also works perfectly well with Windows PCs.

The key switches feel a little heavy and there’s only one switch choice. Satechi has opted for its own proprietary switch, making it harder to know how the board will feel before you buy. That holds it back, and we’d prefer more choice here. Looking beyond that, it’s got plenty of connectivity options, making it well suited to people who find themselves typing on different devices during the day.

Satechi SM3: Price & availability

  • How much does it cost? $119.99 (about £93 / $190 AUD)
  • When is it available? Available now
  • Where can you get it? Available globally

The Satechi SM3 costs $119.99, which is about £93 or $190 AUD. That’s not an outrageous price to pay, especially for a full-length board.

Satechi SM3: Design

The Satechi SM3 mechanical keyboard against a blue background.

(Image credit: Alex Blake / Future)

The SM3 is Satechi’s first full-length, 108-character keyboard. That means it comes with a numpad on the right-hand side, along with a couple of bonus keys for connecting the device to Bluetooth, 2.4GHz, or over a cable.

My review unit came in a simple, attractive gray and white colorway, but there’s also a darker version available. Both come with 14 different backlighting patterns (some of which are a touch distracting) but it only shines in white – there’s no RGB here. That white backlighting was often hard to see in daylight against the white keycaps, making discerning keys with a quick glance trickier than it should have been. There was no issue in low light, though.

This is a slimline keyboard with low-profile keycaps (there are a few spare Windows ones in the box), and that helps it fit neatly into a bag on your travels, provided your backpack can accommodate the keyboard’s full-size length. The keycaps are removable, but any replacements need to fit Satechi’s proprietary switch stems (more on that later).

The SM3 is also impressively lightweight for a large keyboard, weighing in at 1.42lbs (648g) on my scales. For comparison, my Keychron K8 – with its smaller tenkeyless design – weighs 1.96lbs (889g). The Satechi SM3 comes with an aluminum top and sides, while the underneath is made from sturdy plastic.

Around the back are two pop-out feet to prop the board up. Although there are two height options here, they’re both at a fairly shallow angle. It would have been good to have an option for a higher incline. There’s also no wrist rest, but that’s not a huge problem.

Satechi SM3: Performance

The Satechi SM3 is a mechanical keyboard, but it only comes with one switch: a proprietary brown tactile option. It’s a little heavy and sluggish in use, and after a few days I noticed some finger fatigue from having to press harder than I’m used to. A more lightweight configuration would have been welcome. The switches are not hot-swappable, either, so if they don’t feel right to you, you’re stuck with them.

This is definitely not a gaming keyboard, but it’s surprisingly viable for this usage. I played a range of titles, including fast-paced shooters and much more sedate games, and in both cases the keyboard stood up reasonably well. You won’t find any gamer-specific features, but the low-profile keycaps were easy to find by touch in the heat of battle. The main issue is the board’s length, and I found my mouse hitting the edge of the numpad at times.

The Satechi SM3 mechanical keyboard against a blue background.

(Image credit: Alex Blake / Future)

I did have occasional issues with certain keys not registering when pressed, and this seemed to mainly affect the space bar and left Shift key. There were no issues with ghosting in my testing, though.

You can connect the SM3 to two devices over Bluetooth, one using the 2.4GHz receiver, and one with the included USB-C cable. Switching over Bluetooth takes about a second and just requires you to press a single button on the keyboard. You can also change layouts between Windows and macOS, and the keys to do this have “Mac” or “Win” helpfully printed on their keycaps.

Disappointingly, there’s no companion app to assign macros and reassign keys, and the SM3 is not compatible with QMK or VIA.

Should you buy the Satechi SM3?

The Satechi SM3 mechanical keyboard against a blue background.

(Image credit: Alex Blake / Future)
Swipe to scroll horizontally

Value

The price seems fair, although it doesn’t come with many enticing bells and whistles.

3/5

Design

The Satechi SM3 looks lovely and feel solid, despite its slimline design.

4/5

Performance

The only switch option is on the heavy side and you can’t swap it out for something else. Gaming performance is fine, though, and it’s easy to flip between connected devices.

3/5

Average rating

A good mechanical keyboard with some welcome touches, but the lack of multiple (and better) switch options holds it back.

3.5/5

Buy the Satechi SM3 if…

You like the Apple aesthetic

This board will fit in well alongside Apple’s devices.

You want a numpad

The extended layout is ideal for numpad users.

You work on the go

It’s not the smallest board, but its lightweight design won’t weigh you down when it’s in a backpack.

Don’t buy it if…

You prefer lighter switches

Satechi’s proprietary switches are quite heavy.

You want more switch options

You only get brown tactile switches here, and they’re not hot-swappable.

You like customising your keyboards

With no QMK/VIA compatibility and no Satechi-made companion app, you can’t assign macros or customise the device.

Satechi SM3: Also consider

Logitech Signature K650

Our pick for the best keyboard, the Logitech Signature K650 comes with a full-size layout and low-profile keycaps. It’s not got mechanical switches, but it is very reasonably priced and is packed with extras. Read our full Logitech Signature K650 review

Razer Pro Type Ultra

One of our favorite mechanical keyboards is the Razer Pro Type Ultra. You get a full-size layout and a superb typing experience, although its lack of low-profile switches means it’s not as lightweight or portable as the Satechi SM3. Read our full Razer Pro Type Ultra review

How I tested the Satechi SM3

I tested out the Satechi SM3 in both work and gaming scenarios, using it to type all day long and game in the evenings. I also paired it with both a Mac and a PC and tried it on both machines to see how well it fared with the different key layouts.

First reviewed March 2025

Alex Blake
Freelance Contributor

Alex Blake has been fooling around with computers since the early 1990s, and since that time he's learned a thing or two about tech. No more than two things, though. That's all his brain can hold. As well as TechRadar, Alex writes for iMore, Digital Trends and Creative Bloq, among others. He was previously commissioning editor at MacFormat magazine. That means he mostly covers the world of Apple and its latest products, but also Windows, computer peripherals, mobile apps, and much more beyond. When not writing, you can find him hiking the English countryside and gaming on his PC.

You must confirm your public display name before commenting

Please logout and then login again, you will then be prompted to enter your display name.

Read more
Gamakay TK101 on table with pink background and plant
I think the Gamakay TK101 is a capable mechanical keyboard, but my testing found it still lacks the performance and features of the very best
Logitech G915 X on desk with plant and pink wall in background
I spent several days with the Logitech G915 X Lightspeed TKL, and while it’s capable enough, it doesn’t best its rivals
Gamakay TK75 V2 on desk with pink wall and plant in background
Gamakay TK75 V2 review: a mechanical keyboard that’s a dream to use and comes in at a good price
Lemokey L5 HE 8K on table with pink wall and plant in background
I tested the new Lemokey L5 HE 8K and while it offers plenty of analog adjustments, it doesn’t feel quite as good as its rivals
Razer BlackWidow V4 Pro 75% front view on desk
Razer BlackWidow V4 Pro 75% review: a thick wireless gaming keyboard with exceptional performance – and a price to match
The Asus ROG Falchion Ace HFX keyboard
I’ve fallen in love with the Asus ROG Falchion Ace HFX 65% keyboard because of its brilliant touch bar and Hall effect keys
Latest in Keyboards
The Satechi SM3 mechanical keyboard against a blue background.
I used the Satechi SM3 Slim Mechanical Backlit Bluetooth Keyboard and was surprised by how light it is for a full-sized board
Corsair K70 Pro TKL gaming keyboard resting on a desk
I replaced my main gaming keyboard with the Corsair K70 Pro TKL for two weeks - here's my verdict
The Asus ROG Falchion Ace HFX keyboard
I’ve fallen in love with the Asus ROG Falchion Ace HFX 65% keyboard because of its brilliant touch bar and Hall effect keys
Logitech G915 X on desk with plant and pink wall in background
I spent several days with the Logitech G915 X Lightspeed TKL, and while it’s capable enough, it doesn’t best its rivals
black gaming keyboard against red background
Take $100 off one of the best Logitech gaming keyboards just in time for Presidents' Day
Lemokey L5 HE 8K on table with pink wall and plant in background
I tested the new Lemokey L5 HE 8K and while it offers plenty of analog adjustments, it doesn’t feel quite as good as its rivals
Latest in Reviews
The player holding a Shard Card in Fragpunk.
Competitive shooter Fragpunk wowed me with its game-changing Shard Cards, but I can't stand the aggressive monetization
Xiaomi 33W 10,000mAh Power Bank leaning on plinth on desk with pink background
I wouldn't take the Xiaomi 33W 10,000mAh Power Bank on extreme adventures, but it's great for my basic traveling needs
VQ Cath Kidston 5,000mAh Power Bank leaning on plinth on desk with pink background
The VQ Cath Kidston 5,000mAh Power Bank is one of the most stylish batteries I’ve seen, but it’s too slow for the price
Atomfall
I survived Atomfall’s testing countryside and became an ethically murky mercenary
The Xiaomi Pad 7 Pro on a bronze table
I tested the Xiaomi Pad 7 Pro and it's the closest Android fans can get to an iPad Pro alternative
TinEye website
I like this reverse image search service the most