Laser mini portable touch pad keyboard for tablet smartphone

Model Number: GDL001B Brand Name: USB laser keyboard Key Specifications/Special Features: Laser mini portable touchpad keyboard for tablet smartphoneOur company pushes out a new electronic product recently projection laser keyboardFollowing are some information of it for your more understand of it:Features:1. Compact and ultra-portable for mobility
2. English QWERTY keyboard layout
3. Easy connection via Bluetooth 3.0 HID profile or USB
4. Lithium-ion polymer rechargeable battery, Mini-B type charge interface
5. Compatible with latest operating systems:
6. Windows XP/VISTA/7/8, Windows Phone 7, iOS4/5/6, Android 3.1 higher, Mac OS X

Parameter:
Physical dimensions: 38 x 75 x 18mm
Weight: approx 40g
Keyboard light source: red laser diode
Keyboard language: English
Keyboard layout: 20.8mm sized QWERTY layout
Projection size: approx 241*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 (maximum) 3.7V/ replaceable soft-pack type
Charger: rating 800mA at 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: maximum 2.4W, 4.2V
Use temperatures: approx 0 to 50°C
Storage temperatures: approx -20 to 50°C