Feature: 1. Easy Control: When typing in the business office put the mouse on your fingers, it is easier to control the whole situation, and greatly avoid the long time use of the mouse on the wrist muscle injury. 2. Stable Connection: 2.4GHz wireless connection, stable connection and no distance limitation, giving you a sensitive use experience. 3. Ergonomic Design: Ergonomic handheld wireless mouse is the best choice for arthritis sufferers with comfort and ease. 4. Compact and Portable: Compact design without the traditional large flat surface, allowing you to use in clothes, bed, sofa are available. 5. Performance: Built in lithium battery, and can be charged and discharged hundreds of times, high working efficiency and stable performance. Specification: Item Type: Wireless Finger Ring MouseMaterial: ABSResolution: 1000DPI Wireless Frequency band: 2.4G Mhz Charging Time: 2 hours Usage Time: 15 hours (Continuous use) 170 days (standby) Service Distance: 10-12 meters Supported System: for XP/NT/VISTA/7/8/10 Battery Type: Lithium battery 150mAhx1 (built in) . Package List: 1 x Wireless Finger Ring Mouse1 x Receiver 2 x Spare Ring 1 x USB Cable 1 x User Manual