STARNUO K3 virtual keyboard also has power bank(5200mAH) and voice reading,multi-touch mouse,Projects a full-size QWERTY keyboard.It is easily paired with any smart devices by bluetooth.It is compatible with iOS 4.0 and later,Android 4.0 and later,Windows XP and later, Blackberry 10, and any other Bluetooth HID devices.Can be used virtually on any flat and opaque surfaces as an input device1. The laser is safe and passed tests of FDA. However, please don't let laser project to your eyes directly2. If you don't use it frequently, please charge it fully at least one time per month 3. When the environmental light is strong, don't use it because the projected keyboard is not visible enough4. When you use it, please put it on flat and opaque surface. When the keyboard keeps beeping, it means it's not satisfied with the working surface.Just put it on a flat and irreflexive surface, it will stop crying immediatelySPECIFICATIONS1.Bluetooth Version: 3.0 or above (we keep upgrading it to make it perform better)with HID Profile Ver. 1.0 2.Keyboard Light Source: Red Laser Diode3.Projection Size: 241mm x 101mm4.Projected Keyboard Location: 97.9mm from Keyboard Device5.Keystroke Sound: Built in Buzzer (Mute Possible) and mini voice speaker6.Visibility: Good Contrast up to 1800 LUX7.Detection Rate: 400 Characters per Minute8.Detection Algorithm: Multiple Key Strokes9.Required Projection Surface: Non-reflective, Opaque Flat Surface10.Battery capacity: 5200mAH Built in11.Compatible systems: Windows XP/Vista/7/8, IOS 4.0 above for iPhone 4/5s/5c/6/6Plus and for iPad, Android 4.0 above,for MAC OS12.Language: English13.Product dimensions: 84.0x58.0x22.5 mm14.product weight: 297g15.Battery capacity16.Working time:30 hours17.Charging time：2.7 hoursThe Package DetailSTARNUO K3*1USB charging cableUser manual*1
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