1、The millimeter‑level precise dial can accurately position the vertical line to reduce errors and improve work efficiency. 2、The flexible multi‑mechanism pendulum body has passed strict balance tests to ensure the pendulum is stable and accurate even if it vibrates randomly. 3、Low refraction, good light transmission, using optical glass, high light transmission and no other variegated colors. 4、The equipment will be self‑leveling, put the line level on a more level place, and automatically level within an inclination of <4°. 5、Multiple protection, more stable performance, protection grade IP54, suitable for wall construction, photo hanging, etc. 6、The light source is thin, strong penetrating power, clear eye protection, no blur, no dazzling. The locking mechanism can protect the internal parts, allowing manual mode. Item Type: Line Level Material: Plastic Color: As shown in the picture Model: T04 Laser Beam: 1H1V Number of Laser Diodes: 1 Beam Color: Green Laser Wavelength: 505-550nm Laser Power (H/V): 10mw Accuracy (H/V): 1.5 mm at a distance of 5 meters, 3 mm at a distance of 10 meters Energy-Saving Mode: Three-gear energy-saving mode can save power Automatic Compensation Range: 4°±1° IP Rating: IP54 Laser Class: Class 2 Working Temperature: -10~50℃ Working Range: 30m Working Range with Receiver: 35m Beam Launching Angle (H/V): 130° Battery: 2xAA batteries (not included) Working Time: 7 hours 1 x Line Level(Battery Not Included) 1 x Storage Bag 1 x Bracket 1 x Instruction Manual