Hyw 69 Ergonomic Vertical Erect Design Wireless 2.4Ghz Optical Mouse Black Mice Trackballs & Touchpads Size:Standard Unisex Design: The Helmet Liner

Unisex Design: The Helmet Liner Fits All Outdoor Pursuits Including CyclingMotorcyclingRunning Climbing HikingSkiing Snowboarding

Wireless Remote Sensor: 2 X Aaa Battery

Compass: Show Bearing In Degrees And Cardinal Point

Sensitivity: 42 (Db)

Hyw 69 Ergonomic Vertical Erect Design Wireless 2.4Ghz Optical Mouse Black Mice Trackballs & Touchpads Size:Standard Unisex Design: The Helmet LinerMain Features: Ergonomic Vertical Design Reduces Hand Fatigue And Prevents The Formation Of Mouse Hand Dpi: 800 1000 1200 1600 Powered By 2 X Aaa Battery ( Not Include ) Using 2. 4Ghz Wireless Technology Transmission Distance Is 10M Plug And Play Not Need Any Driver Built In Usb ReceiverDiv>SpecificationGeneral Type: MouseBr> Material: AbsBr> Mouse Type: OpticalP>Product Details Cable Length (M): NoBr> Connection: WirelessBr> Connection Type: 2. 4Ghz