cheap laser projection keyboard magic cube wireless virtual laser keyboard

Specifications cheap laser projection keyboard magic cube wireless virtual laser keyboard

1,bluetooth

2,power bank 7800mah

3,for android IOS

cheap laser projection keyboard magic cube wireless virtual laser keyboard                 

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.100mm 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:	93mmx22mmx80mm
Weight:	Approx. 200g
Keyboard language:	English
Charger:	Rating 2A @ 5V
Battery capacity:	Polymer rechargeable battery,780mAH(Max)@3.7V
Battery working time	30 hours
Battery charging time	4 hours
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	v2.0(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