Feature: 1. Dual Mode: Bluetooth + 2.4 G wireless 2. Accurate tracking: Professional IC positioning accuracy 3. Silence key: Optional click silence 4. High resolution: Max1600 DPI high resolution for fluid motion 5. Fashionable slim design: Slim design for sleek look and portable use Specification: Color: Black Material: ABS+Metal Key life: 5 million times Wireless distance: 10m Work: Photoelectricity Charging cable length: 80cm Project Type: Ergonomics Optical Mouse Resolution: 1600dpiDefault Operation Mode:Opto-electronic Rated voltage / current: 3.7V / 8mA Power Type:Rechargeable Type:2.4Ghz Wireless+BluetoothDual Mode Buttons: 2 Buttons and 1 Round (Middle Mutton) and Mouse mode keyBottom of the mouse System requirements: Windows 98 / Me / 2000 / XP / Vista / Win 7 / Win8 / 10/Vista Mac OS or latest. Product weight: 75g Item size: 11 *6 * 2.5cm Package List: 1 * Mouse (Dual Mode: Bluetooth + 2.4 G wireless) 1 * USB Receiver 1 * USB Charging Cable(80cm) 1 * English manual How to use: For 2.4G Wireless Mode: Click mouse mode key > Mode indicator red light on >plug receiver into computer USB port >conneted For Bluetooth Mode: 1. click computer's Bluetooth Icon > add device> start searching device 2. Install mouse battery > Turn on the switch >Click mouse mode key > blue light fast flash 3. (IMPORTANT) hold down mouse left, right key and middle scroll together for 5 seconds >blue light slow flash > get pair