Ultra light-weighted， easy to carry， with Blue LED DPI: 800/1000/1200/1600Button Number: 4DWorking distance:10MBluetooth V3.0 Brand: MEMTEQModel Number: M3sDPI: 800/1000/1200/1600Button Number: 4DWorking distance:10MBluetooth V3.0Feature: ErgonomicColor: gold Power supply: 2 x 1.5V AAA (not included)Voltage/current: DC 3V 0.2MA(Min) 12MA(Max) Wireless distance/rate: 10m / 2.4GHZ Dimension: about 110 x 60 x 28mm Buttons: Left， Right， Scroll wheel， DPI button， ON/OFF Instruction: 1. Please make sure the device that you want to connect supports Bluetooth. 2. Put the battery into the mouse and then turn on the mouse. Press "Left， scroll wheel， and Right" buttons together till the indicator flashes red and blue alternately， and then search on the device and connect. OS supported:1. Mainly applicable for Apple Mac OSX v10.2.6/laptop/PC ultrabook， etc. with Bluetooth 2. Desktop computer of windows 7/ XP/Vista， etc.， an external Bluetooth adapter is required. (adapter not included) Notes: 1. The package does not include the Bluetooth adapter. Before buying， please make sure that your device is Bluetooth enabled and Bluetooth driver is downloaded. If your device does not have Bluetooth driver， please download firstly. 2. Different system requires different Bluetooth settings. Please set well while using. (Please refer to the user guide for details.) 3. This mouse is suitable for win XP，win vista，win 7，win8，win8.1，MAC OS，linux.4. For first time use， please pair the Bluetooth and then the driver will be installed automatically. For any applicable original system， driver can be installed automatically without the need of connecting to network.For changed system， please pair the Bluetooth online to search driver automatically. This process may take 1-2 minutes.If guests find that it will appear suddenly disconnected when using the mouse， turn off the power saving mode in system settings. 1 x Mouse 1 x English user guide In original package