S04CG 4 x 360 Green Laser Level           Specifications:           * Laser Class: Class 2 (IEC/EN60825-1/2014), <1mW power output           * Laser Wavelength: 520nm           * Screen type: LCD screen with backlight           * Horizontal/Vertical Accuracy: +/- 1/9 inch at 33Ft           * Leveling/Compensation Range: +/-4°           * Working Distance (Line): 20M(60-100 LUX), 40M with Huepar Receiver LR-5RG/LR-6RG           * Operating Time: 6 hours continual use with all laser beams on           * Power Source: 2600mAh Li-ion battery&Dry battery           * IP Rating: IP54 dust-proof, waterproof and shockproof, reliable and tough           * Operation Temperature Range: 14℉ ~ 122℉ (-10℃~ 50℃)           * Storage Temperature Range: -4℉ ~ 158℉ (-20℃~ 70℃)           * Mount Size: 1/4"-20                         WARNING: ● Do not point the laser beam directly into the eyes.