High performance with Dual Connection Modes, Silent Clicking, 2.4HGz Wireless, Rechargeable Battery-Environment Friendly, and Ergonomic Design. Features: Dual Connection Modes Connect with PC or laptop with Nano Receiver or by BT. Silent Clicking Makes a quiet environment for little baby and never disturb others. 2.4HGz Wireless 2.4GHz wireless tech supports up to 10M transmission, avoid interface from BT and WiFi and never disturbed by mess wire. Rechargeable Battery-Environment Friendly The battery is rechargeable and cause no harm to environment. Ergonomic Design Fit for your hands and provide comfortable holding. Mini USB Receiver Nano receiver is hidden in the mouse and don’t be afraid of lost. Wide Compatibility Compatible with Windows, Android and Mac OS systems. Several Colors Optional Provide you with black, white, golden and silver mouses. Specification: Color: Black/White/Golden/Silver(optional) Type: 2.4G + BT Dual Modes Rated Current: ≤10mA Rated Voltage: 5V Battery