Right Only - KeyMouse Alpha 303 (Beta) Right Hand KeyMouse Alpha 303.. Product #: KM-ALPHA-303-R Regular price: $299.50 $299.50

Right Only - KeyMouse Alpha 303 (Beta)

Item #: KM-ALPHA-303-R

Price: $299.50

Available Options

Cherry Switch Color:
MX Brown (Default) - Tactile (55cN operating force)
MX Blue - Tactile "Clicky" (60 cN operating force)
MX Silent Red - Linear (45 cN operating force)
MX Silver - Linear (Shorter Travel) (45 cN operating force)
Hand Size:
Medium (Default)
Key Cap Layout:
QWERTY (Default)
Blank Key Caps

NOTE: This product is being sold as Beta.

Our target users are those that spend pretty much all day at the computer.  We've developed many features specifically with this in mind.  Our primary goal is to increase user efficiency and comfort.  Here are a few of our key features:

  • Genuine Cherry MX Mechanical Key Switches
    If you're not familiar with mechanical switches, they are much higher quality than typical keyboards. Cherry keys are manufactured in Germany with high precision. They have a premium feel that lasts up to 50 million presses per key.
    For more details on the Cherry MX switches, see article: Cherry MX Switch Types

  • Fully Re-programmable Keys
    You can change the function every key and button on KeyMouse Alpha (including the commands for scrolling up and scrolling down on the scroll wheel for both left/right hands).  There are 6 key layers that can be saved into the devices.

  • Diodes on Every Key & Button for Anti-Ghosting
    Each key has it's own circuit board with a diode to prevent ghosting.

  • High Resolution 12,000 DPI Mouse Sensors (Both Hands)
    You can program keys to adjust the speed/DPI of left/right or both hands.  We have many options such as adjusting speed while a key is held down (and it reverts back to previous speed when key is up), adjust speeds faster, or slower, etc.

  • Compatible with Windows, Mac, and Linux
    Our software is compiled and tested for Windows/Mac.  We also have software for Ubuntu Linux (Beta).  Due to the various flavors of Linux, sometimes Linux is less compatible for the software, but the devices should connect and operate fine.  You just might need to connect to Windows or Mac to re-program the keys if the software isn't working for you. 

  • Custom 3 Color Key Caps
    Our key caps have white, blue, and yellow colors on them to show the various key layers (particularly for number pad and arrows).

  • Ceramic Feet
    We now use Ceramic Feet for much smoother glide on the mouse pad or desk.  We recommend use with hard top mouse pads or surfaces.

  • Four Sizes Available
    We want KeyMouse to fit your hands as closely as possible since it's important for your hands to be comfortable with all keys within reach when operating keyboard & mouse at the same time.

  • Angle of "K" key (middle finger on home row) is 8 degrees side to side

  • Weight - One device (such as Right Hand only) weighs approx. 8.3 oz (235 g)

  • Backlighting for Cherry Key Switches



1. This version does not include Bluetooth or RF pairing as previous versions did.
2. This version does not have the rubber coating as previously.
3. The product is 3D Printed.  The finish is not like injection molded products.
4. For size Small dimensions, click here.
5. For size Medium dimensions, click here.
6. For size Large dimensions, click here.
7. For size XLarge dimensions, click here.
8. If you choose the "Assemble Myself" option above to save money, be warned that it is a lot of work, and takes a lot of time.


Box Contents:

  • Left Hand fully assembled KeyMouse (unless DIY options are selected)
  • 2 Meter USB Cable (Braided)
  • Key Cap Puller
  • Extra Key Caps

1 Year Warranty (from date of purchase)
Currently we will cover any defective parts + shipping to your location.  You will be responsible to replace the parts.

Warranty does not cover any damage you cause to the devices.

Return Policy:
We will offer you a 30 day return policy from the time of delivery. If you feel like it doesn't work for you, you can return it. You will be refunded the price of the product minus a 10% product return fee. You will be responsible to pay for return shipping. It must be returned in the original packaging, include all hardware and components, and be in perfect condition, both cosmetically and mechanically.