Keyboard layout: QWERTY layout (20mm spacing)

Light source: red laser

Projection size: width approximately 250mm, height approximately 100mm

Work platform: non reflective, opaque flat surface

External power supply: USB power/greater than 5V 2A

Battery working time: approximately 500 minutes

Battery charging time: approximately 180 minutes

Mobile power supply: USB output 5V 1A

Size: 90mm * 44mm * 48mm