Features: The wireless keyboard for users to instantly use their tablet or phone into a tiny laptop computer for fast, comfortable typing. Quiet typing and comparable to typing on a standard computer keyboard, easy to type. Wide application, for most modern devices, for wireless devices. Quite thin size unfolds to only 0.35cm and with 0.16kg lightweighted. Fitted with rechargeable battery hence appropriate for outdoor use. Battery charges in only about 2hrs.. Specifications: Model：G2104 Operating Distance: 10m Color： Oprional Battery Capacity: 90mAh Layout: 65Keys Operating voltages: 3.3-4.2V Unfold Size:about 334.4x104.6mm/13.16x4.11in Folded size:about 167.2x104.6x3.35mm/6.58x4.11x0.13in Package Includes: 1PC Folding Keyboard note: Due to the problems of lighting effects there will be tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurement.