Kensington 72104 PocketMouse Bluetooth Mouse DiamondEye optical technology responds to your fastest movements with ultra high-speed tracking and unmatched acceleration guidance Provides secure, interference-free performance with any Bluetooth enabled computer and up to 7 other Bluetooth wireless devices Has a wireless range of up to 30 feet for maximum freedom in controlling presentations Backed by a five-year manufacturer's warranty and free technical support Ergonomically-designed shape for all day comfort, includes carry bag for travel convenience