Keyboard layout: QWERTY layout (about 20MM spacing)
Light source: Red laser
Projection size: Width about 250MM, Height about: 100MM
Working platform: Non-reflective, Opaque plane
External power supply: USB power supply/more than 5V 2A
Battery and capacity: Lithium-ion battery, 2500MAH (MAX) @3.7V
Battery working time: About 500 minutes
Battery charging time: About 180 minutes
Power bank: USB output 5V 1A
Bluetooth: V3.0 HID PROFILE VER 1.0
Main function:phone bracket,power bank,usb link with computer,keyboard and mouse function