1. Dual-mode 2.4G+BT design for stable wireless connection and smoother operation. 2. Horizontal and vertical dual-use, 90-degree rotation sensing area to meet different usage needs and provide a more comfortable user experience. 3. Compact structure, and portable, suitable for use in business trips, travel, etc. 4. Compatible with multiple systems, including , iOS, Android, Linux, , with a wide range of applications. 5. Aluminum alloy scroll wheel design, and accurate positioning, no lag, providing a smooth operation experience. 6. Note: [BT version only support win7 or above system] Wireless Mouse - Compact and Portable Ring Mouse with Dual-Mode 2.4G+BT Mice Compatible with Multiple Systems Horizontal and Vertical Use Perfect for Laptop Resolution: 1000DPI Wireless band: 2.4G MHz / Bluetooth Built-in lithium battery: 3.7V 150mA Charging time: 2 hours Use time: 15 hours (continuous use) 170 days (standby) Using distance: 10-12 m Product size: 68 x 39 x 26mm Weight: 30g mission interface: USB1.1 USB2.0 [Bluetooth version 5.0 Support system: Android/iOS//Linux/ Color: Material: ABS Package Contents: 1 * Finger mouse 1 * USB charging cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.