GeneralScroll Type : Scroll Wheel
Number of Buttons : 4
Wireless Connectivity : Bluetooth
Bluetooth : 5.0
Wireless Range : 33' / 10 m
Battery Requirements : 1 x AA Alkaline
Maximum Battery Life : 12 Months
Full-Functionality OS Support : Windows
Dimensions (L x W x H) : 4.0 x 2.3 x 1.5" / 100.4 x 58.2 x 38.3 mm
Weight : 2.75 oz / 78 g