Laser laser bluetooth projection keyboard

Description

Keyboard layout: QWERTY layout (about 20MM spacing)

Light source: red laser

Projection size: width: 250MM, height: 100MM

Working platform: non-reflective, opaque plane

Recognition rate: 350 characters/minute

Battery and capacity: Li-ion battery 550MAH(MAX) @ 3.7V

Battery working time: about 120 minutes

Battery charging time: about 120 minutes

Charging power supply: USB input/5V 1A

Bluetooth: V3.0, HID PROFILE VER 1.0

Frequency range: 2402 2480MHZ

Channel: 79

Modulation method: GFSK

Size (mm): 76MM X 19MM X 25MM

Weight (g): about 50g