1With power saving function, 8 minutes without any operation, it will automatically enter deep sleep mode, no need to switch for energy saving, and you can press any key to wake it up. 2It is with slim and stylish body, and its weighing about 90g, moreover, the thinnest part is about 10mm. 3Such kind of mouse is made of ABS environmental plastic, which is comfortable to touch. 4The overall shape is full with raised tail. And it can be fit to the hand shape and effectively reduce the hand fatigue. 52.4G+ Bluetooth dual mode mouse supports that the mode type is free to switch. Item Type: Mouse Material: ABS Gross Weight: Approx.95.00g Packing Size: Approx. 11.00 x 7.00 x 4.50cm / 4.33 x 2.76 x 1.77 in Uses: Wireless mouse Model: M90 Color: Black / White / Gold / Rose Gold / Silver / Gray( optional) Material: ABS Critical Life: 5 million times Wireless Distance: Approx. 10 m / 32.81ft Battery Capacity: 500mAh (rechargeable lithium battery) Charging Line Length: Approx. 25cm / 9.84 in Project Type: Ergonomic optical mouse Resolution: 800, 1200, 1600. (1200dpi default) Operating Mode: Photoelectric Rated Voltage / Current: 3.7V / 18mA Power Type: Rechargeable (charging time 2h, working time 150h) Type: 2.4Ghz wireless mouse Button: 2 buttons, 1 circle (middle wheel) and Dpi button System Requirements: For Windows 98 / Me / 2000 / XP / Vista / Win 7 / Win8 / Win 10 / Vista / Mac OS or new version. 1 x Mouse 1 x USB Charging Cable 1 x Instruction Manual 1 x USB Receiver