HXSJ M103 1600DPI Dual Mode 2.4GHz + Bluetooth 5.1 Wireless Rechargeable Mouse 1. 2.4G+BT5.1 dual modes wireless transmission technology, energy-saving, built-in storage, no need for code, smart connection. 2. 15M wireless receiving distance, superior anti-interference ability. 3. Third gear DPI adjustment design, 800-1200-1600dpi. 4. Silent design, quiet and elegant office wireless mouse. 5. High resolution: Max 1600 DPI high resolution for fluid motion. 6. Fashionable slim design: slim design for sleek look and portable use. 7. Add a one-click desktop feature to quickly return to the desktop. 8. 250Hz high rate return chip, data transmission is faster, fast cursor positioning. 9. Specification: - Material: ABS - Key life: 5 million times（Silent design） - Wireless distance: 15m - Work: photoelectricity - Battery capacity: 500mAh（Chargeable lithium battery） - Charging cable length: 25cm - Project type: ergonomics optical mouse - Resolution: 800,1200,1600(1200dpi Default) - Operation mode: opto-electronic - Rated voltage current: 3.7V 18mA - Power type: rechargeable(charging time 2h, working time 150h） - Type: 2.4Ghz rechargeable wireless mouse - Buttons: 2 buttons and 1 round (middle mutton) and DPI key and one-button desktop button(only support Windows system) - System requirements: Windows 98 Me 2000 XP Vista Win 7 Win8 10Vista Mac OS or latest. - Weight: 68.3g - Size: 11.3x5.7x2.6cm