Features: brand new and high quality Made of premium material, it is strong and durable. The built-in high-quality lithium battery, which can be charged and discharged hundreds of times,and without changing the battery. Mini Cute Wireless Finger Rings Optical Mouse 1000Dpi. Plug and for play, do not need any driver. Compact and lightweight, portable to carry. Suitable for notebook ,laptop tablet, Desktop PC. Specifications: Color: Black Material: ABS Dimension: approx. 60 x 40 x 38mm/ 2.36x1.57x1.49in Interface: USB Operating distance: 10-12m Frequency: 2.4GHz DPI:1000 DPI Fit System: XP/WIN7/8 Battery: Built-in Lithium Battery Package Includes: 1x Wireless Ring Mouse 1x USB Charging Cable 1x Ring Clasp 1x 2.4G Receiver 1x Box 1x Manual note: Due to the lighting effects and shooting angles, there is color difference in the product, please understand. Due to manual measurement, there is a tolerance in the product size.