Bluetooth Laser Projection Keyboard

 This projection keyboard will work via bluetooth HID ,connection to main devices , like tablet PC , smartphones , desktop PC and video game.As a new input devise , using the built-in infrared laser transmitter to project the standard keyboard on the working surface , you can locate the click position and input the information by the method of optical identification .Without physical keyboard ,small size , easy to carry , this projection keyboard can adapt to most of the wroking environment 

Specification :
Pattern projection: 
Light Source : Red laser diode 
Keyboard layout : Approx , 19mm pitch ,QWERTY layout 
Keyboard Size : Approx , 2400mm, Height : 100M
Keyboard location : Approx , 80mm from the bottom of the devise 
Project surface : non-reflective ,opaque flat surface 

Keyboard Sensor : 
Recognition rate : Approx , up to 350 characters per min 
Operating surface : ant firm flat surface 

Electrical Characteristic :
External power supply : USB power / less than 5V 500mA
Battery & Capacity : lithium-ion polymer battery , 700mAh(max) @ 3.7V
Battery Operating time : Approx 120min 
Battery Charging Time : Approx 120min 
Bluetooth : V3.0 , HID Profile Ver 1.0
Frequency Range : 2402-2480MHz
Channel : 79