1. ERGONOMIC DESIGN: Heated mouse is ergonomically designed to feel comfortable in your hand and avoid hand fatigue during long hours of use. 2. ZINC ALLOY: Heated wired mouse is made of zinc alloy, fast and efficient heat transfer, making the mouse heat up quickly. 3. GRAPHENE HEATING PIECE: Fast and uniform heating, good flexibility, good tensile strength, not easy to break, stable heating, high security. 4. TEMPERATURE SENSOR: Temperature sensor real time monitoring of the heating temperature, to maintain a constant temperature of 38¡æ or 41¡æ. 5. HEAT INDICATOR: Hand warming mouse with heat indicator, green light indicates low temperature 38¡æ, blue light indicates high temperature 41¡æ, the mouse state at a glance. Specification: Item Type: Heated Mouse Material: ABS, Zinc Alloy Heat Generation Material: Graphene Heat Control: 3 Gear Power Toggle Switch (Off, Low Temperature, High Temperature) Heat Indicator: Low Temperature 38 ¡æ: Green Light High Temperature 41 ¡æ: Blue Light Number of Keys: 3 Heating Current: 150?600ma How to Use: Plug and Play Package List: 1 x Heated Mouse 1 x Instruction Manual