Class IIIB Green Laser Pointer

Available color: Pearl white or Black
Dimensions (L x Φ):140(L) x 13.5(Φ)mm
Battery Life: 6 hours
Wavelength / Power:532nm/50mW
Operation: ON/OFF touching button
Project distance : 4000 meters away.
Battery: Alkaline AAA x 2pcs
Dot Size: 15*15mm at 10M distance
Package : EVA+Paper box, or Tin box with EVA
Coherent Length:16.2 cm (good for interference pattern creation)