DUAL MODE (BT 5.0 + 2.4GHz):The dual-mode wireless mouse only needs one switch to realize the free switching of one mouse between two devices. It can connect one device through bluetooth and another device through a 2.4GHz USB receiver.Note: You can't use Bluetooth mode and 2.4G mode at the same time..ERGONOMIC DESIGN : Good surface coating technology gives you a skin-like touch. The ergonomic design provides 24 hours comfort for your work and study, and the portable and pocket size are perfect for you.Built-in battery,easy to charge by usb cable,no more need for extra AAA battery.It can be easily activated by clicking any buttons..AUTO ENERGY-SAVINGSLEEPING MODE: Li-polymer batteries,high cycle life.the Auto Switch Off function will help you save energy as your bluetooth mouse will switch off when your PC is turned off or the receiver is disconnected. If you do not use the mouse for 10 minutes, it will go to sleeping mode..BEST COMPATIBLE BLUETOOTH & RECEIVER: Compatible with more than 99.9% Bluetooth devices. This bluetooth mouse is suitable for all laptops with bluetooth function or ipad iPhone with iOS13 or above..SERVICE SUPPORT :We provides you with 24-hour email contact service.If you have any mouse questions or needs, please feel free to contact us.