Feature: 1. 2.4GHz wireless transmission technology allows to stably connect to desktop PC and laptops, etc. 2. 800DPI, 1200DPI, 1600DPI adjustment, ensures to position the object quickly during using to meet different needs of the display screens with different resolution. 3. Specially designed for people who works on computer for a long time to prevent mouse hand. Adopts the ergonomic design, to reduce fatigue caused from long-term use effectively. 4. Silent design, won\u0027t affect others when you use it, and the slim design for portable use and . 5. The effective wireless transmission distance is about 10m, providing anti-interference stable connection within the effective transmission distance. Specification: Features: 2.4GHz wireless transmission technology allows to stably connect to desktop PC and laptops, etc. 800DPI, 1200DPI, 1600DPI adjustment, ensures to position the object quickly during using to meet different needs of the display screens with different resolution. Specially designed for people who works on computer for a long time to prevent mouse hand. Adopts the ergonomic design, to reduce fatigue caused from long-term use effectively. Silent design, won't affect others when you use it, and the slim design for portable use and . The effective wireless transmission distance is about 10m, providing anti-interference stable connection within the effective transmission distance. Low power consumption technology, long battery life, long standby time, to avoid the trouble of frequent battery replacement. Available for 1-2 months at full charge. Specification: Model: M30 Color: Black, White, Grey, Blue, Pink, Silver (Optional) Material: ABS Key Life: 5 million time Wireless Distance: 10m Work: Photoelectricity Battery Capacity: 500mAh (Chargeable Lithium Battery) Resolution: 800,1200,1600 (1200dpi Default) Rated Voltage / Current: 3.7V / 18mA Buttons: 4 Buttons（Left, Right, Scroll Wheel and DPI Key) Power Type: Rechargeable（Charging Time: 2h，Working Time: 150h） Item Size: 108 * 61 * 29mm / 4.25 * 2.4 * 1.1inches Item Weight: 68g / 2.4oz Package Size: 125 * 75 * 30mm / 4.9 * 2.95 * 1.2inches Package Weight: 89g / 3.1oz Packing List: 1 * Mouse 1 * USB Receiver 1 * USB Cable (25cm) Package List: 1 * Mouse 1 * USB Receiver 1 * USB Cable (25cm)