Blackbook 15.6-inch Laptop Protection Sleeve – Green

Sensor technology: high precision optical tracking Sensor resolution: 1000 Number of buttons: 7 Scroll wheel (Y/N): yes (with hyper-fast scrolling） Tilt scroll function (Y/N): yes Battery life: 36-month battery life Battery type: 2 AA batteries Wireless operating distance: ~10 m Wireless technology: advanced 2.4 GHz wireless connectivity (Unifying supported) Interface: USB receiver