EXCELVAN Atongm Portable Wireless Laser Projection Bluetooth Vitual Keyboard for Iphone, Ipad, Smartphone and Tablets White

USB Connection Terminal
Method: USB connect
USB type: standard USB Mini-B type
Interface Specification: USB HID keyboard
Input Power: 1A 5V USB charge

Specification
-Physical Dimension: 36mmx18mmx74mm; Weight: Approx.40g
-Keyboard light source: Red laser diode
-Keyboard language: English
-Keyboard layout: 20.8mm sized QWERTY layout
-Projection size: Approx. 241mm*101mm
-Projected Keyboard location: Approx. 97.9mm from keyboard device
-Keystroke Sound: Built in buzzer(Mute on/off the sound)
-Visibility: Good contrast up to 1800 lux ambient illumination
-Detection rate: Over 400 characters per minute
-Detection algorithm: Multiple key stroke support
-Effective key stroke: Approx.2mm
-Required projection surface: Non-reflective, opaque flat surface
-Power source: The USB bus power, Lithium-ion battery power, DC input power
-Battery capacity: 700mAH(Max) 3.7V, Replaceable soft-pack type
-Charger: Rating 800mA 5V
-Interface: USB 1.1 and 2.0 for PC, Bluetooth(v2.0 class 2,class 3 )HID for Mobile devices
-Switch mode: Switch the active/Standby mode manually
-Power consumption: max 2.4W 4.2V
-Software compatibility: All USB HID Compliant OS, All Bluetooth HID Compliant Mobile Device, Windows XP/WINDOWS 7 or Higher, LINUX, Ipad, Iphone,Android 2.2 or Higher

Package:1x Laser keyboard; 1x Mini USB cable; 1x User Guide