HXSJ T37 2.4GHz 1600dpi 3-modes Adjustable Wireless Mute Mouse Product feature: 1. Connection method : 2.4 G wireless 2. Rechargeable: Built-in rechargeable battery 3. Accurate tracking: Professional IC positioning accuracy 4. 10m wireless receiving distance 5. Third gear DPI adjustment design 6. Silence key: Silence key: 5 million silent designs, more suitable for office use. 7. High resolution: Max 1600 DPI high resolution for fluid motion 8. Metal sump design, high-end wireless mouse, stylish, easy to carry. Product parameters: 1. Operation Mode: Opto-electronic 2. Type: 2.4 GHz Wireless 3. Power Type: Rechargeable 4. Number of keys: 4 keys 5. Key life: 5 million times (Mute switch) 6. Wireless distance: 10m 7. Battery capacity: 500mAh 8. Resolution: 1600dpi 9. Rated voltage current: 3.7V 8mA 10. Product weight: 84g 11. Product Size: 110 x 65 x 35mm Three-level power saving mode: - Three seconds into the first sleep light flashing continuously - 1 minute or so to enter the secondary sleep, intermittent flashing lights - 8 minutes or so, go to level 3 sleep, the light goes out Package includes: - 1 x Rechargeable Wireless Mouse - 1 x USB receiver - 1 x USB charge cable(80CM) - 1 x Instruction manual