Description: Silent: Mute mouse clicks, suitable for office, gaming Internet cafes, library and other occasions. BT5.1 + 2.4G: Slim body, you can carry easily, put it in a backpack or pocket, and use it wherever you go. Large Capacity: Rechargeable battery, charging for 2 hours, working time up to 150h. Can automatically sleep, intelligent power saving design. Three level power saving modes. Easy Operation: Plug and play. 3 adjustable DPI levels (800-1200-1600 DPI) enables you to control the speed of the mouse freely. Material: Made of good quality ABS plastic material, durable and has a long serve life. Specification: Model: M103 Dual modes Wireless Mouse Wireless: 2.4G + Bluetooth 5.1 Material: ABS Key life: 5 million times(Silent design) Wireless Distance: 15m Work: Optical Battery Capacity:500mAh(Rechargeable lithium battery) Charging cable length: 25cm DPI Adjustable: 800-1200-1600 (1200dpi Default) Rated voltage / current: 3.7V / 18mA Charging time: 2h Working time: 150h Buttons: 5 Buttons Weight: 68.3g Three level power saving modes: 1): Three seconds into the first sleep light flashing continuously 2): 1 minute or so to enter the secondary sleep, intermittent flashing lights 3): 8 minutes or so, go to level 3 sleep, the light goes out. large battery Size Chart: 11.3x5.7x2.6cm/4.45x2.24x1.02inch Package Includes: 1 Piece Dual Modes Wireless Mouse 1 Piece USB Receiver 1 Piece USB Charging Cable (25cm) 1 Piece Manual Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!