ProtoArc EM11 NL Bluetooth Vertical Mouse Vertical Bluetooth Mouse recommended for small to medium hands, mouse size 5.43 x 2.72 x 2.68 inches (13.7 x 6.8 x 6.8 cm). To achieve a more comfortable fit and better user experience, we recommend you measure your hand measurement before purchasing Ergonomic Design and Improved Comfort: The ergonomic wireless mouse features an extended wrist support that fits perfectly in the palm of your hand and promotes a more natural, relaxed position for the forearm and wrist. This design helps minimize the risk of repeated stress injury and reduce arm muscle tension to ensure all-day comfort Connect Up to 3 Devices: This ergonomic wireless mouse offers both BT 4.0 and 2.4G USB Dual Connection, so you can connect to 3 different devices simultaneously. Switching between devices is as simple as clicking the mode switch button. Compatible with Windows 8, Windows 10, Mac OS X 10.12 or above and Android 4.3 or above Rechargeable Battery: The Bluetooth vertical mouse is equipped with a built-in 500mAh Li-ion battery, which can be charged via the included Type-C cable. After 30 minutes of inactivity, the mouse automatically switches to sleep mode to save power and can be reactivated by simply moving it. Besides, the low battery indicator reminds you to charge the mouse wireless when the red light flashes
