①. 3DPI SWITCH: Using high-performance optical chips, up to 1600 dpi (800, 1200, 1600), applicable to various games with accurate tracking. ②. Adopt bluetooth 4.0 technology, built-in durable 450mAh Lithium polymer rechargeable battery with high cycle life; charging time is about 1.5 hours, offering lasting use time. The Auto Switch Off function helps save energy by switching off when the PC is turned off or the receiver is disconnected. If not used for eight minutes, it goes to sleeping mode and can be woken up by pressing any button, featuring energy saving and low power consumption. ③. Support for Windows, Mac OS X, Linux, Android and most other systems; suitable for PC, notebook computers, macbook, and windows/android tablets. ④. Contoured shape, Ultra Thin and lightweight design with smooth surface ensuring comfort and support for the hand even after long working hours. The rubber scroll wheel prevents hand slipping during scrolling. This bluetooth mouse can meet daily office working and personal preference demands.