Features:BT version 3.0, operation range up to 10 meter. 6 buttons, for more convenient operations.Keystroke life up to 8 million times, long service life.Quick thumb function: with forward button and backward button, fast forward or backward when browsing the web, forward or backward at the same folder window.Maximum resolution: 2400 DPI, and 4-level adjustable DPI: 800/1200/1600/2400 DPI, meet your various need.Ergonomic shape & soft rubber grips, fit snugly under your palm, effectively reducing the fatigue during the intense working. Suitable for BT-enabled laptops, PC or tablets, portable and user-friendly, perfect for business trip.Support for W98/W2000/XP/VISTA/Win 7/Win 8/Mac/Android.Powered by 2 * AAA batteries (not included).How to use: 1. Insert 2pcs AAA battery. 2. Switch the mouse "ON", the on/off button at the bottom of the mouse. 3. Press at the same time the left key, right key and the scroll wheel for 2-3 seconds. Red light will be on to indicate BT mode opening. 4. Search the mouse in BT device and connect to it.Note: 1, If your device is not BT-enabled, please use the mouse with a BT adapter.2, To use the wireless mouse, please turn on the switch (at the bottom).