1、The millimeter‑level precise dial can accurately position the vertical line to reduce errors. 2、Flexible multi‑mechanism pendulum body guarantees accurate peace and stability even with arbitrary vibration. 3、Using optical glass, high transmittance, low refraction, without other variegated colors. 4、Self‑leveling, put the leveling tool on a more level place, and automatically level within an inclination of &lt;4°. 5、IP54 protection level, multiple protection, suitable for wall construction, photo hanging, etc. 6、The locking mechanism protects the internal parts of the device and allows manual mode. Item Type: Laser Line Meter Material: Plastic Product Model: T52 Laser Beam: 360° Horizontal Line + 1 Vertical Line 1V360H Number Of Laser Diodes: 2 Beam Color: Green Laser Wavelength: 505-550nm Laser Power (H/V): 10mw Accuracy (H/V): ±1.5mm/5m Automatic Compensation Range: <4° IP Rating: IP54 Laser Class: Class 2 Working Temperature: -10-50℃ Storage Temperature: -25-70℃ Working Range: 30m / 98.4ft Working Range with Receiver: 50m / 164ft Beam Launch Angle (H/V): 360°/130° Battery: 2000mAh built-in lithium battery (Type-C interface) Working Time: About 6 hours for the 1st gear, about 10 hours for the 4th gear Product Size: Approx. 114x66x66mm / 4.5x2.6x2.6in 1 x Laser Line Meter 1 x Storage Bag 1 x Hanging Bracket 1 x USB Cable 1 x Manual