High-precision optical sensor Two-level adjustable resolution (1,000/2,000 dpi) Multi-device function for up to three end devices Perfect ergonomics for small and large hands 7 buttons and a scroll wheel Fits snugly in the hand Rubber-coated side sections for optimal grip Transmission via encrypted Bluetooth? 5.0 (AES-128) GENTIX BT Bluetooth Mouse 2 x AAA Batteries Operating Instructions Transport Pouch