bluetooth laser virtual keyboard with mouse fuction for smartphone,tablet,laptop

Specifications bluetooth laser virtual keyboard with mouse fuction for smartphone,tablet,laptop

1,bluetooth

2,mouse fuction

3,fast shipping

bluetooth laser virtual keyboard with mouse fuction for smartphone,tablet,laptop                         

Specification:
Pattern Projector
Keyboard light source:	Red laser diode
Keyboard layout:	Approx.19mm sized QWERTY layout
Projection size:	Approx. 100mm(H)*240mm(W)
Projected Keyboard location:	Approx.80mm from keyboard device
Required projection surface	Non-reflective,opaque flat surface
Electrical Characteristics
Recognition rate	Over 350 characters per minute
Operation Surface	Any opaque flat surface
physical Dimension:	78mm x 40mm x 20mm
Weight:	Approx. 60g
Keyboard language:	English
Charger:	Rating 5V 500mA
Battery capacity:	Polymer rechargeable battery,600mAh(MA X) @ 3.7V
Battery working time	150 minutes
Battery charging time	90 minutes
Keystroke Sound:	Built in buzzer(Mute on/off the sound)
Visibility:	Good contrast up to 1800 lux ambient illumination
Effective key stroke:	Approx. 2mm
USB interface	USB 1.1 and 2.0.USB,HID Ver.1.0
Bluetooth	v3.0(class2),HID Profile Ver.1.0
Frequency Range	2402-2480MHz
Channel	79
Modulation	GFSK
Environmental Conditions
Working Temperature	Approx.-10~40°C/90%RH
Storage Temperature	Approx.-20~40°C/~90%RH