USB Optical Heated Mouse, Bottom Heat Switch, Hand Warmer (Black). Comes boxed. This item is designed as a hand warmer with computer mouse capabilities. It is a novelty-priced item not to be compared with a high-priced computer mouse used with intensity daily for highly sensitive software engineering, drafting and design. Tested by our office staff, the hand warmer mouse is for the average computer user. | Heating element warms to about 99F degrees. Internal heating element positioned for the mouse hand. Bottom On/Off control function. ABS polymer construction. Safety Certified CE and RoHS. | Measures about 5 L x 3 W x 1.5 H inches and weighs about 4 ounces. Scroll wheel over 5M clicks. Braided USB cable about 65 inches. Enhanced DPI 800/1200/1600/2400 resolution. Foward/Back buttons. | Ergonomic shape. Provides heat to the mouse hand to soothe and relax muscles. Fits comfortably for a right hand and easily adapts to left hand users. | Helps soothe hand stress from arthritis, raynauds, carpal tunnel, poor circulation using a low 5v internal heating element safe for USB connection, the computer and people. Perfect for cold office or cold work environment.