1) 5.5 meter or 18 feet length
2) Laser projection: Red spot/Hairline laser light beam
3) Two level bubbles on top
4) Laser wavelength: 630-680nm in red color
5) Laser power: < 5mW 6) Materials: Rubber surface 7) Tape Lock/Unlock button 8) Laser On/Off button 9) Laser projector is powered by 3pcs x AG13/LR44 button cells (included) 10) Size: 13.8×8.7×3.8cm 11) 360 degree horizontal laser line and point
