1.Health: Ergonomics design;Natural movement of your forearm and wrist reduce repective strain injury. 2.Effort-saving: Slight movement allows the cursor to move over the full screen smoothly. 3.Convenient: Except for glass, the finger mouse works almost any surface, such as wooden table, laptop itself,clothes and even your skin. 4.Compact:Stylish, space saving and easy to carry. The compact design allows users to type with the finger mouse on the index finger. 5.Multi-funcitonal: The finger mouse could also be used as a wireless remote control for presentation, training, seminar etc. 6.Economical: The high quality internal lithium-ion battery is rechargeable it can be recharged for several hunderd times, saving battery 7.Specification: 1)Resolution: 1000DPI 2)Radio frequency(RF):2.4G 3)Working distance:15mters 4)Build-in Li-ion battery: 3.7V/230mA 5)Charging time: 2 hours 6)Continue using time: 14 hours 7)Stand by time: 170days 8)Net weight: 25g(mouse),10g(receiver) 9)Interface: USB2.0