Loong Application:Can connect mobile phone， tablet， notebook / computerFor iPad2，iPad3，iPad4，iPad Mini，iPad Air;for Sumsung Galaxy Tab，Galaxy Note.....Revolutionary laser technology projects a virtual keyboard on any flat surface，smartphone， laptop or tablet.Compatible with latest operating systems: Windows XP/VISTA/7/8， Windows Phone 7， IOS4/5/6 (iPhone and iPad) Android 3.1 higher， Mac OS XCertification:CE/FCC/RoSH/FDAFeature:1.USB Connection Terminal2.Interface Specification: USB HID keyboard3.Input Power: 1A 5V USB charge4.Compact and ultra-portable for mobility5.English QWERTY keyboard layout6.Easy connection via Bluetooth 2.0 HID profile or USB7.Lithium-ion Polymer rechargeable battery， Mini-B Type charge interface8.Compatible with latest operating systems: Windows XP/VISTA/7/8， Windows Phone 7， IOS4/5/6 (Iphone and Ipad) Android 3.1 higher， Mac OS XHow it worksWhen the user presses a key on the projected keyboard， the infrared layer is interrupted. This produces IR reflections that are recognized by the sensor in three dimensions， allowing the system to assign a coordinate.Conditions to avoid1. Avoid direct sunlight2. Avoid low color temperature light source， such as tungsten， halogen， or incandescent lamp.3. Avoid uneven or irregular surface， Put the product on flat， opaque surface.4. Avoid putting any objects within the space between the main unit and the laser projected keyboard layout.Note: Because this product uses infrared rays， strong infrared radiation from direct or reflected sunlight or from tungsten (halogen or incandescent) lighting may cause operating error.Technical Specs* Pattern Projector* Keyboard light source: Red laser 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 surface Non-reflective， opaque flat surface Electrical Characteristics* Recognition rate Over 350 characters per minute* Operation Surface Any opaque flat surface* physical Dimension: 38mmx18mmx75mm* Weight: Approx 47g.* Keyboard language: English* Charger: Rating 1A 5V* Battery capacity: Polymer rechargeable battery， 700mAH (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* 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 What's in the box* Laser keyboard* USB cable* User GuideNote: The usb cable is only used to charge the Keyboard. 2.The Laser Keyboard Can be used directly for smartphone and pc tablet，for Laptop Must use a Bluetooth Receiver(not include)http://contestimg.wish.com/api/image/rating?name=b426702c7b8911e68b9c065f903a9ac5.jpg&w=1000&h=1000&m=0&t=0