The mouse you choose for whichever Bluetooth device you use.Works with almost any deviceConnect to any Bluetooth?-enabled PC or Mac? or Windows? 8 tablet-no receiver required.Go for one full yearThe M557 offers exceptional battery life for a Bluetooth mouse.All the control you needCustomizable buttons give you one-touch access to the things you use most， like the Windows? 8 Desktop and Start Screen.Brand Name: LogitechColor: Dark GrayErgonomic Fit: SymmetricalMovement Detection: OpticalPointing Device Connectivity Technology: WirelessPointing Device Wireless Technology: BluetoothProduct Type: MouseScroller Type: Tilt WheelHeight 8.35 inchesWidth 3.20 inchesLength 6.06 inchesShipping Weight 1.96