Auto-leveling Mode & Manual ModeWhen the pendulum is unlocked, the laser level will turn on and enter the auto-leveling mode. The laser level can automatically level within ± 3°. If it exceeds ±3°, the laser beam will continue to flash. Press and hold the middle button for 3 seconds to switch to manual mode. Green Laser LevelThe laser level produces 8 laser lines, which makes it easy to stick to the floor, ceiling and plastering work. The laser line can be changed according to the needs of the work. A laser level can be used for many purposes. 2 x 2600mAh Batteries & Remote ControlThe laser level comes with 2 x 2600mAh rechargeable batteries. The battery takes 3 hours to fully charge and can be used for up to 8 hours. Two 2600mAh large capacity batteries can work for up to 16 hours. The battery is individually rechargeable and can be quickly removed and installed. With the remote control, your alignment work becomes simple and quick. Green Laser LineAccurate laser line measurement with horizontal accuracy of +/- 1/9 inch over 33 feet. Compared with red light, green light emits more light due to the change in wavelength. Provides a working distance of up to 65 feet outdoors. Laser wavelength: 505-520nm, operating temperature range: 14F ~ 104F (-10 ~ 40). Wide range of applications and easy installationHorizontal/vertical lines can be selected according to the construction site, suitable for auxiliary fixing of ceramic tiles, wall decorations, stair railings, etc. Includes a 360 rotating magnetic bracket for mounting on metal surfaces. A lifting base. The mini tripod allows for precise adjustment of the tripod, making it easy to adapt to uneven surfaces.