➤【Self-leveling & Manual Mode】This green laser level can set 2 modes, self-leveling mode and manual mode. Unlock the pendulum, enable the self-leveling mode, when the tool exceeds the self-leveling range by 4°±1°, the laser beam will flash twice per second to remind you. Once the pendulum is locked, it switches to manual mode, the self-leveling function is disabled, the cross is locked, and you can position the laser level at any angle you need. ➤【Advanced Protection and Long Working Time】Class II protection level, IP54 (shockproof, waterproof, dustproof, wear-resistant, cold-resistant and high-temperature resistant). Equipped with 2 AA batteries, it can support up to 4 hours of continuous working time. ➤【High Visibility and Accuracy】Professional laser level has a leveling accuracy of ± 3mm at 10m, working range up to 25M. Self leveling laser levels are ideal for indoor tiling, picture hanging, window installation and other construction projects, but not recommended for outdoor use. ➤【Flexible Installation Method】The laser level is equipped with an L-shaped magnetic bracket, which is easy to fix on the metal surface and realize 360° rotation. The laser level is also available with a 1/4"-20 mounting thread to suit standard tripod or laser pole mounting. ➤【Package Contents】1 x Green Laser Level, 1 x 360° Magnetic Stand, 1 x Flannel Bag, 2 x AA batteries, 1 x User Manual.