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Cooler Master Sk-621-Gklr1-US SK621 60% Mechanical Keyboard with Cherry MX Low Profile Switches and Brushed Aluminum Design

3.5 3.5 out of 5 stars 162 ratings

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About this item

  • Two Keycap Sets: Slightly contoured and flat set, or go with the traditional keycap profile set for that familiar look and touch
  • Cherry MX Low Profile Switches: A reduced travel distance and actuation point with the same signature durability and precision
  • Brushed Aluminum Design: Slim top plate, floating keycaps, and minimalistic, tenkeyless design built with functionality in mind
  • Keep It Light with LEDs: Keep the lightshow going with per-key backlighting and surrounding lightbars with endless customization
  • On-the-Fly Controls: Make real-time adjustments to lighting and macros with no software necessary
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From the manufacturer

Cooler Master SK621
main

SK621

Strikingly Sleek

Be the envy of chiclet keyboard fanboys everywhere with the ultra-portable SK621 Wireless 60% Mechanical Keyboard. With flat contoured keycaps and new Cherry MX Low Profile switches in a stripped-down 60% format, you've finally found a portable wireless keyboard that delivers on performance - without sacrificing the clean aesthetics of your slick workstation. And with signature Cooler Master features on deck, you’re fully equipped to crush it both at work and in-game.

  • Cherry MX Low Profile Mechanical Switches
  • Portable 60% Keyboard Layout
  • Wireless Keyboard Capability
  • On-the-Fly Controls
  • Customization via Software
  • Slim, Extra Flat Keycaps

Features

Cherry MX Low Profile Switches

Durable Brushed Aluminum

Hybrid Wired & Wireless

Software Customization

Low Profile Switches

A reduced travel distance and actuation point with the same signature durability and precision.

Portable 60% Keyboard

Mini, unique and compact design with all of the essentials.

Hybrid Wired & Wireless

Up to 3 devices supported with Bluetooth 4.0, or use it wired over a removable Type-C USB and charge the battery simultaneously.

Software Customization

Map 16.7 million colors to any key, customize lighting modes, and fine-tune macros.

RGB Backlighting and Lightbar
SK621 SK630 SK650 SK630 White SK650 White
SK621 SK630 SK650 SK630 White SK650 White
Customer Reviews
3.5 out of 5 stars
162
4.0 out of 5 stars
256
4.0 out of 5 stars
649
4.0 out of 5 stars
256
4.0 out of 5 stars
649
Keyboard Size 60% Ten-Keyless Full Size Ten-Keyless Full Size
Switch Type Cherry MX RGB Low Profile Red Cherry MX RGB Low Profile Red Cherry MX RGB Low Profile Red Cherry MX RGB Low Profile Red Cherry MX RGB Low Profile Red
Material Aluminum / Plastic Aluminum / Plastic Aluminum / Plastic Aluminum / Plastic Aluminum / Plastic
LED Color RGB RGB RGB RGB RGB
Polling Rate 1000Hz 1000Hz 1000Hz 1000Hz 1000Hz
Connection Type Bluetooth Wireless & USB Type-C Wired USB Type-C Wired USB Type-C Wired USB Type-C Wired USB Type-C Wired
32bit ARM Cortex M3
On-board Memory 512KB 512KB 512KB 512KB 512KB
On-The-Fly System Yes, for Multi-media, Macro Recording and Lighting Control Yes, for Multi-media, Macro Recording and Lighting Control Yes, for Multi-media, Macro Recording and Lighting Control Yes, for Multi-media, Macro Recording and Lighting Control Yes, for Multi-media, Macro Recording and Lighting Control
Mutli-media Keys Through Function Key (FN) Through Function Key (FN) Through Function Key (FN) Through Function Key (FN) Through Function Key (FN)

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Cooler Master Sk-621-Gklr1-US SK621 60% Mechanical Keyboard with Cherry MX Low Profile Switches and Brushed Aluminum Design
Cooler Master Sk-621-Gklr1-US SK621 60% Mechanical Keyboard with Cherry MX Low Profile Switches and Brushed Aluminum Design
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Price$49.99$158.54$20.99-21% $118.99
List:$149.99
$20.99$54.99
Delivery
Get it as soon as Wednesday, Apr 3
Get it as soon as Wednesday, Apr 3
Get it as soon as Wednesday, Apr 3
Get it as soon as Wednesday, Apr 3
Get it as soon as Wednesday, Apr 3
Customer Ratings
For gaming
2.9
4.2
4.2
3.6
4.6
3.7
Value for money
2.3
3.8
4.5
4.3
3.8
Ergonomic
4.5
4.4
4.0
4.4
4.5
Quality of material
3.8
4.7
4.6
4.7
Accuracy
4.0
4.0
3.4
Sold By
AVGPC
CHERRY AMERICAS
Womier SHOP
Slam-Dunk
Womier SHOP
Redragon Shop
connectivity tech
Bluetooth
wired
Bluetooth
2.4Ghz, BT, USB-C
number of keys
61
108
118
104
144
61
hardware interface
usb
bluetooth
bluetooth
compatible devices
PC
Gaming Console, Keyboard
PC
Keyboard
PC/Laptop/Phone
keyboard description
Gaming
Mechanical
Gaming
Mechanical
Mechanical
Gaming
operating system
Windows
Windows 10, Windows 11, macOS 10.15, iOS 14, iPadOS 14, Linux, Chrome OS, Android
Gaming/Travel/Everyday Use/Music

Product Description

The SK621 is a truly portable keyboard with mechanical switches. The 60 percent format removes the Nav keys and numpad, but still packs all the signature Cooler Master features like on the fly controls and Hybrid key rollover. Cherry MX low profile switches with reduced travel and actuation distance means you get all the precision and durability of a mechanical keyboards, but with the slim stylings of a minimalist, chic let keyboard. Add in a refined brushed aluminum housing and Bluetooth wireless capability, and you have the ultimate on the go mechanical keyboard.

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Product information

Technical Details

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Additional Information

Warranty & Support

Amazon.com Return Policy:You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellable condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. Amazon.com will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.
Product Warranty: For warranty information about this product, please click here

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Cooler Master Sk-621-Gklr1-US SK621 60% Mechanical Keyboard with Cherry MX Low Profile Switches and Brushed Aluminum Design


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Customer reviews

3.5 out of 5 stars
3.5 out of 5
162 global ratings

Customers say

Customers like the build quality of the keyboard, saying it's sturdy and made of high-end materials. They also appreciate the form factor and the bluetooth connectivity. However, some customers have reported issues with the connectivity and performance of the product. They mention that the keys are close together and hard to find, with the Windows key not working and the primary keys not lining up evenly. Customers also dislike lag, and ease of typing. Opinions are mixed on appearance, comfort, and size.

AI-generated from the text of customer reviews

11 customers mention11 positive0 negative

Customers are satisfied with the build quality of the keyboard. They mention that it is sturdy, and made of high-end materials. Some appreciate the form factor.

"...Let's start with the good: the build quality on this thing is fantastic. Some of the best I've ever seen on a keyboard...." Read more

"This is a very attractive keyboard and feels extremely well-constructed. It's hefty and solid.Others have complained about the keycaps...." Read more

"...Overall impressions are the keyboard looks and feels sturdy and high quality, with nice attention to detail...." Read more

"Really solid keyboard; feels great to use, although it takes some getting used to...." Read more

34 customers mention16 positive18 negative

Customers are mixed about the appearance of the keyboard. Some mention it's very attractive, with cute style keys. They love the design, and the keyboard has a great profile. That said, some say their keypresses are sometimes extremely exaggerated, and that the layout annoyances are there.

"...All the keys are accessible, however, you may need to press key combinations to get them; for instance, to type the "tilde," you must press the key..." Read more

"...-In bluetooth mode on a mac, my keypresses are sometimes extremely exaggerated ssoooooo ittt tyyyyyyyyyypes liiike thhhiisss...." Read more

"This is a very attractive keyboard and feels extremely well-constructed. It's hefty and solid.Others have complained about the keycaps...." Read more

"...There are also some layout annoyances, like the tiny right shift button, plus a confusingly designed Caps Lock LED which actually indicates that..." Read more

13 customers mention9 positive4 negative

Customers are mixed about the comfort of the keyboard. Some mention that it has a nice feel to it, and is satisfying to type on. They also appreciate the linear switches and soft to the touch. However, others say that the key caps are unnatural, and heavy. They feel the edges of the surrounding keys while trying to press distant keys.

"...This keyboard is not a "clicky" keyboard and is soft to the touch; some may like this, some may hate this...." Read more

"...Most of the keys feel very nice to press but it's difficult to know exactly when the actuate...." Read more

"...Plus, the short throw red switches just feel awful to type on regardless. They are mushy and bleh. No keycap can fix a mediocre switch...." Read more

"...In short, this is a great keyboard that feels really satisfying to type on (despite the learning curve due to its size)...." Read more

7 customers mention4 positive3 negative

Customers are mixed about the size of the keyboard. Some mention that the size is perfect for someone using a desk tray holding a keyboard, while others say that it's almost too small. The keyboard is also criticized for having different-sized keys.

"...The size is perfect for someone using a desk tray holding a keyboard and mouse. However, it has some serious problems:..." Read more

"...YOU WILL NEED TO ADJUST TO THIS KEYBOARD since some of the keys are of different size i.e. the right shift key, the del key to the right of the up..." Read more

"...great quality, the keys feel great. good quality cherry mx. good size, the 60% fits perfect on my cluttered desk. perfect for travel...." Read more

"...Lag is terrible. When hard wired it works fine, nice small size, good build quality, quiet, nice LEDs." Read more

14 customers mention3 positive11 negative

Customers are dissatisfied with the performance of the keyboard. They mention that the keys are close together and hard to find, the Windows key doesn't work, and the primary keys do not line up evenly. The caps lock does not work properly, and it loses any keystrokes during that time. The right shift key is a little small, and so far the keyboard does not operate perfectly with a Mac in Bluetooth mode.

"...My only complaint so far is the keyboard does not work perfectly with a mac in bluetooth mode...." Read more

"...The problem is that the caps are all super close together, and due to the nature of the switch design, you will readily actuate multiple keys at once..." Read more

"It works great, looks great, sounds great....but I kept pushing more than 1 button at a time because they are too close together...." Read more

"...Add to that the primary keys do not line up evenly like a regular keyboard, and you find yourself hitting the wrong keys often if you are a touch..." Read more

13 customers mention0 positive13 negative

Customers are dissatisfied with the connectivity of the keyboard. They mention that the bluetooth connection is usually disable, unusable, and drops inputs all the time. They also say that it refuses to reconnect and that it does not auto-connect.

"...The bluetooth on this thing sucks...." Read more

"...Input lags *multiple seconds* and the connection drops frequently. Can I plug it in and use it in wired mode? Sure. Should I have to? No...." Read more

"...6 ft away. Bluetooth is garbage at 6 feet away apparently for keyboards even for regular typing, let alone gaming; so much latency...." Read more

"...the lights shut off (even the charging light) and it will no longer connect to bluetooth...." Read more

9 customers mention0 positive9 negative

Customers are dissatisfied with the lag of the keyboard. They mention that it takes several seconds to wake up and connect, and the typing experience is very frustrating.

"...Input lags *multiple seconds* and the connection drops frequently. Can I plug it in and use it in wired mode? Sure. Should I have to? No...." Read more

"...for keyboards even for regular typing, let alone gaming; so much latency...." Read more

"...Once the battery hits 30%, key lag becomes insane, and it will become impossible to type...." Read more

"...this keyboard less than 6 inches away from my laptop and I experience lag stuttering and occasionally a bug where it..." Read more

5 customers mention0 positive5 negative

Customers find the keyboard hard to type on and difficult to type accurately on the default keycaps. They also mention that it has trouble connecting and keeps repeating letters many times.

"...It is *nearly impossible* to type accurately on the default keycaps...." Read more

"...the battery hits 30%, key lag becomes insane, and it will become impossible to type...." Read more

"...use is wirelessly a few feet away from computer and it kept repeating letters many times as if the bluetooth was cutting out...." Read more

"Won't stay connected to Bluetooth, has trouble connecting, will repeatedly type 26 letters when I've only typed 1, goes non responsive randomly...." Read more

4 Star Keyboard, 2 Star Assembly
3 Stars
4 Star Keyboard, 2 Star Assembly
I would definitely recommend this keyboard for what it is. Not many keyboards out there that have low profile mechanical keys, bluetooth, RGB lighting, and USB C connectivity. This particular design has some issues already described by other buyers:Plastic area around the USB C connector doesn't fit many other cables.Not enough clearance for internal USB connector - it runs into those cylindrical diodes.My particular keyboard has these issues:Cosmetic defect on the front corner/edge.USB ground wire pinched inside, exposing copper strands. (Fixed this myself)My unit is planar and does not rock. I will be keeping it.
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Top reviews from the United States

Reviewed in the United States on May 24, 2019
Reviewed in the United States on May 18, 2019
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Reviewed in the United States on October 16, 2020
2 people found this helpful
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Top reviews from other countries

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Adrian L N
5.0 out of 5 stars Excelente teclado, casi perfecto
Reviewed in Mexico on July 27, 2020
2 people found this helpful
Report
Fejuz Acosta
1.0 out of 5 stars el teclado ya no funciona
Reviewed in Mexico on September 24, 2020
Victor Hugo Olmos
5.0 out of 5 stars Compacto
Reviewed in Mexico on October 17, 2020
Jane
2.0 out of 5 stars Okay keyboard, garbage software and support
Reviewed in Canada on September 15, 2020
5 people found this helpful
Report
Nicolas Roy
5.0 out of 5 stars Excellent premier clavier méchanique
Reviewed in Canada on April 1, 2020
One person found this helpful
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