The KAT is a body-worn feedback device use to accelerate muscle memory.  Vibrations are felt on the body through the KAT's surface area. The small device allows for an optimal balance of  'felt sensation' and the ability to train any movement, anywhere, any time. 
The KAT device is compact (49mm x 49mm x 8mm); the clip allows a KAT to be attached to the wearer’s body, waist, arms leg, head and/or wherever  technique  or skill demands the wearer's attention.