Led writing board: high quality acrylic, super bright, write smoothly and easy to wipe off with duster not to remain any trace.

frame: PS or ABS frame, it is safer and smoother compared with the aluminium-alloy frame.

Quantity of leds: about 160 led lights RGB or white, it is super bright, eaqual light, lifespan:100000hrs.

Voltage: 110/220/230/240v-12v/24v/5v, 40 flashing models, 13 functions

Size:480*250*30mm

Reg. The battery supply, only for the small size, 40-50leds. It will be used out in a very short time maybe several minutes for battery in big size.