[SELF-LEVELING & 2 SELECTABLE MODES] In auto mode, auto leveling mode is available with 4 tilt range. The laser will self-level, otherwise, beyond 4 tilt, the laser beam will flash to trigger an alarm that it is no longer level. Lock the pendulum to enter manual mode, the self-leveling function will be disabled and locked, allowing the device to be used from any angle. [HIGH VISIBILITY AND ACCURACY]With the Powerful laser diode, the Laser lines are clearly visible and easily project a bright red cross at a 110 angle. Horizontal Line Accuracy: 2mm/10m (Radius) Vertical Line Accuracy: 2mm/5m(Radius) Range: 15 meters. [Ideal for construction work] Can also be mounted on a 1/4 tripod (not included). Can be rotated 360 freely for your work. [STURDY DURABILITY Anti-Drop]IP54 protection against dust and water ensures working in harsh conditions. Six-sided above-ground drops from 1 meter without loss of functionality or accuracy. [WHAT YOU GET] 1 * Laser Level, 1 x English User Manual. 1 * canvas carrying case, 2 * AA batteries. 12 month warranty. Note: The device is not suitable for extreme sunlight