Long battery life transparent built-in doll wireless Bluetooth mouse power/connection status visible magnetic cover splicing three-mode silent desktop laptop rechargeable mouse universal. Specification: Product size: 100*60*38mm, Product charging interface: type-c, Product DPI gear: 800-1200-1600-2400, Product connection method: wireless 2.4G+Bluetooth 1+Bluetooth 2, Product battery capacity: 1900mah, Product battery life: about 20 days. Built-in battery 20 days of battery life, Built-in cute doll, Upgraded 500mAh large capacity brand lithium battery, 100% higher than the previous generation. One charge can be used for several months, 1900mah large capacity, About 6 hours charging time, About 20 days of battery life, Ergonomic and user-friendly design. The left and right buttons use bass micro switches, and the roller plus rubber creates a quiet and comfortable environment for you whether it is a quiet office or studying at night.