Back at CES 2019, Cooler Master unveiled three new and interesting wireless mechanical keyboards that would be launching later this year. Now the company is finally starting things off with the launch of the first of these keyboards, the SK621, an ultra-compact 60% sized keyboard based around Cherry MX low profile switches. And, as it turns out, this is also Cooler Master's first-ever wireless Bluetooth mechanical keyboard.

The SK621 is based around a plastic frame topped with a brushed aluminum plate, giving the keyboard some elegance while keeping its weight down. All the while the 60% form factor makes it smaller than most other desktop keyboards. Users can make the most of the RGB functionality and customize the look on the fly with hotkeys, while users looking for a more professional look can turn them off.

Underneath the shallow keys is the linear Cherry MX Low Profile switch, which is similar to Cherry's MX Red switch, but with an actuation point of 45 cN without an audible click. Connecting to a system can be done via Bluetooth 4.0, or with the included USB Type-C to USB Type-A cable (which is detachable and can be used for charging too). At just 424 g, the Cooler Master SK621 gets most of its weight from the mixed aluminum and plastic body, which serves as the foundation of the keyboard.

The Cooler Master SK621 is currently available for pre-order for $120 at Amazon. It is expected the SK621 will filter into other retail channels in the coming weeks.

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  • Notoriousbigs - Saturday, May 11, 2019 - link

    Hi, there are two 2000mAH equal to 4000 mAH. The keyboard under RGB mode will run for 13 to 15 hours. If there are no lighting, the keyboard will last up to 5 months.
  • andy o - Saturday, May 11, 2019 - link

    The problem is that these keyboards from lower volume brands like Cooler Master and Corsair don't have good battery saving functions. For example, the Logitech K810 has a sensor that lights up the keyboard when your hands are over it, and turns them off several seconds after you put your hands away. Mine lasts for months and it's always on. I've been using it with my HTC for years now. I just got a Corsair K63 wireless and had to charge it only several days later cause the backlight is always on and at best it's just on a timer. Plus it's extremely bright without adjusting it via the proprietary software.
  • Synomenon - Sunday, May 12, 2019 - link

    Been using the SK630 (TKL version) for a few months now at work. The ABS keycaps look like shit already even though I wipe them down a few times a week with lysol wipes. They should have used PBT keycaps.
  • Synomenon - Sunday, May 12, 2019 - link

    The stabilizers in the longer keys aren't standard either so you can't purchase just any low-profile PBT keycap set to replace them.
  • buxe2quec - Monday, May 13, 2019 - link

    I hope there will be an ISO edition (larger Enter key and smaller left shift key, split into two).
  • linuxgeex - Tuesday, May 14, 2019 - link

    If they come out with a 78-key variant I will be all over it.
    They keep forgetting the developer market. I'm not accepting a keyboard where I have to hit 5 keys to type what would be a 3-key macro on a full keyboard, and I'm sure not accepting a keyboard where del is packed with the arrow keys, and the up arrow is exactly where my pinky finds the shift from 35 years of typing experience on sane layouts.
  • dromoxen - Wednesday, May 15, 2019 - link

    IT looks nice but who is it aimed at ? gamers or HTPC or just anybody who wants a compact wireless? Uisng a mk830 myself lasts well about two weeks with medium use .. could do with better marked function keys in windows. Oh and its too expensive, but I say that about everything.

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