metal shell wireless portable qwerty layout blutooth laser virtual keyboard for smartphone tablet pc and laptop           

 Main Spec.:

Light source red laser grade two tube
Keyboard layout about 19MM tilt, QWERTY keyboard layout
Keyboard size 100mm (H) *240mm (W)
Keyboard position distance emitter bottom 100mm
The projection is not reflective and the opaque surface is
Recognition rate of 350 words / minute
The operation of any level surface
Working environment 0 ~ 35 C / 90%RH
Storage environment ~90%RH ~ 35 C / -5
Dimension (mm) x 22.5MM x 58mm 84mm
Weight (g) 180g
External power supply below 1.5A @ 5V-5.4V
Battery & capacity dual USB interface, 2A @ 5V
Battery & capacity 5200mAH (MAX) @ 3.7V
Battery operation time 30 hours
Battery charge time 2 hours
USB interface USB 1.1 & 2, HID Ver. USB 1
Bluetooth V3.0 (Class 2), Profile Ver. HID 1
Frequency range 2402-2480MHz
Channel 79
Modulation GFSK