1.[BEST COMPATIBLE BLUETOOTH 4.0 CHIP]: Compatible with more than 99.8% Bluetooth devices. This bluetooth mouse is suitable for all laptops with bluetooth function or ipad iPhone with iOS13 or above^ 2.[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 eight minutes, it will go to sleeping mode, you can press the any button to weak it up.^ 3.[BUILT-IN BATTERY]: Built-in battery,easy to charge by micro usb cable,no more need for extra AAA battery.please please keep the mouse power switch in ON position when charging .^ 4.[ERGONOMIC DESIGN] Good surface coating technology given you a skin-like touch feeling. User-friendly design provide all-day comfort for work and entertainment, portable and pocket-sized perfect for travel, Mute design keeps away annoying clicks.^ 5.[Silent mode button silent]Whether you use it in a dormitory, library, or office, do nt worry about affecting others. Our products are made with the highest quality materials and are designed to provide you with the best possible user experience. We strive to ship out all orders within three days of purchase, and the estimated delivery time is 8-60696 days. When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please dont hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it