LI-ION BATTERY & POWER INDICATOR - Powered by built-in Li-ion battery, the FC011G laser level offers remarkable battery life and can last about 6H continuous working when fully charged. 4 battery indicators let you know the current battery volume and protect from overcharging. With Type-C charging port, you can charge the laser level with laptop, power bank, car charger, etc. CROSS LINE LASER BEAM - Projects two bright laser lines at 110 - one horizontal and one vertical which are precise level and plumb, for wide level and alignment application such as hanging pictures, painting, wallpapering at home. 1/4"-20 threaded mounts allow you to use it with a tripod (not included) and easily adjust its height to make measurement flexible and stable. SELF-LEVELING & MANUAL MODE - Unlock the pendulum , the self-leveling mode is activated, it can level quickly in 3 seconds, the laser beams will flash continuously when the tool is out of the self-leveling range 4.After the pendulum is locked, the cross lines will be locked in position for use at any angle. COMPACT AND EASY TO USE-This cross line laser level is compact and lightweight for easy grip, it is the laser tool the most most convenient and professional you can use for work.It is simple to operate with only one operation switch, easy to switch modes and ensure fast and error-free work, making your life more efficient and simpler. LASE BRIGHT GREEN WITH HIGH PRECISION - This cross line laser adopts Osram's bright green laser diode, which is resistant to temperature changes and has higher stability. At the same power, the green laser is twice as bright as the red laser, with a working range of up to 98 feet (300 LUX) accurate to 3mm/10m.