Connection Guide: This mouse pairs via Bluetooth or the included USB-A receiver only. Note: A USB-C receiver is not included. The Type-C cable is for charging

Connect up to 3 Devices: This ergonomic wireless mouse features dual BT 5.0 and 2.4G USB-A connectivity modes for simultaneous connection of up to 3 different devices, and is compatible with Windows 8, Windows 10 or higher, Mac OS X 10.12 or higher, and Android 4.3 or higher

Rechargeable Ergonomic Mouse: The Bluetooth Vertical Mouse has a built-in 500mAh Li-Ion battery that can be conveniently recharged using the included Type-C cable(The Type-C cable is for charging only)

Ergonomic Vertical Design: The ergonomic mouse wireless keeps your wrist naturally straight, putting your forearm and wrist in a more natural and relaxed position, which can reduce discomfort and strain, helping to improve productivity and reduce the risk of repetitive strain injuries compared to a standard mouse. Warm tips: We encourage you to relax your palm and hold the mouse naturally when using a vertical mouse

Perfect Fit for Small to Medium Hands: Designed specifically for hand lengths under 7.5 inches (19.05 cm), the EM11 NL reduces wrist strain by aligning with your natural grip. Please measure the size before ordering for a better fit and more comfort

Learning curve: Since it takes a learning curve to get used to the shape when using our ergonomic mouse for the first time, it may cause inconvenience to your mouse grip, We recommend that you take 1-2 weeks to get used to it, as many users find that it will help reduce the pressure and pain on your wrist caused by long-term use of the mouse and improve comfort

Adjustable Dpi & High Performance: 1000/1600/2400 DPI levels provide higher sensitivity than standard optical mice for precise optical tracking; with the back and forward buttons, you can easily navigate websites and increase work efficiency. Note: All buttons are not programmable and the forward and back buttons are not compatible with Mac OS systems

Quiet Clicking: The silent click sound of the left and right mouse buttons help you focus on your work, Note:the middle scroll wheel and and the back/forward buttons are not silent