Laser Keyboard Projector for iPhone Ipad Smartphone and Tablets (Silver)

Specification:

Pattern Projector

Keyboard light source:Red diode

Keyboard layout:Approx.19mm sized QWERTY layout

Projection size:Approx.110mm(H)*250mm(W)

Projected Keyboard location:Approx.100mm from keyboard device

Required projection surfaceNon-reflective,opaque flat surface

Electrical Characteristics:

Recognition Speed: Over 350 characters per minute

Operation Surface:Any opaque flat surface

physical Dimension: 38mmx18mmx75mm

Weight: Approx. 70g

Keyboard language:English

Charger:Rating 1A @ 5V

Battery capacity:Polymer rechargeable battery,1000mAH(Max)@3.7V

Battery working time:120 minutes

Battery charging time:200 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

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

Packing list:

1xVirtual Laser Keyboard

1xUSB cable

1xuser manual

Warning: Please ensure the projection keyboard put on flat desk. If it works on non-flat place, sensitivity and accuracy will be reduced a lot!

Notice:  This projection keyboard works well, but we have to understand it can not type as quick as the wired big keyboard do. If you mind it, it is better to choose wired keyboard.