USB Wireless Finger Mouse which will never hunt for any space on your desk. Use this novel ergonomic mouse which fits on your finger while you are working or surfing on the Internet. It is ideal for using at home, at office, especially for mobile traveller. It works while strapped to the index finger and the button is operated with the thumb and it can work on any surface, such as clothes, trousers...... Features: Innovative design 2.4GHz Radio Frequency (RF) wireless transmission technology Operate the USB Finger Mouse between your index finger and thumb Multi-tasking function allows users to write or type when operating the USB wireless Finger Mouse at the same time Shorten the operation time between keyboarding and operating the Finger Mouse Ethereal and deft, without bulk Plug and play System requirements: Windows 98 / 2000 / XP / VISTA Size: 60 x 40 x 38mm (approx.) (Mouse) Size: 72 x 17 x 8mm (approx.) (USB Receiver) Weight: 25g (mouse) Weight: 10g (USB Receiver) Specifications: Resolution: 1000DPI Radio frequency (RF): 2.4GHz Working distance: 15 meters Build-in lithium-ion battery: 3.7V 230mA Charging time: 2 hours Continue using time: 14 hours Stand by time: 170 days Interface: USB 1.0 or 2.0 Package Contents: USB Wireless Finger Mouse Index Finger Rings: 3pcs in different sizes Receiver USB Cable Instruction Sheet