【4 X 360° WITH TOP & FLOOR LINE LASER】: This laser tool provides four 360 planes of laser light. The top 360° horizontal line can be used for ceiling installation. The 360° floor horizontal line is for tiling installation. With the lifting base, the 360° floor laser can raise from the surface to project over and travel past uneven surfaces or obstructions between 1" and 3.54" height. Two 360° vertical lines cross at 90°angles makes user quickly visualize and finish square layout. 【TRIPLE POWER METHODS&TYPE-C CHARGING PORT】: This 360 laser tool adopted large capacity Li-ion battery (can be purchased easily at local market) for extended run-time, or with 4 AA alkaline batteries. Besides, this 4D laser level can be used at job site by plugged in when take out the battery. With Type-C charging port, the 16 lines laser level can also be charged by laptop, power bank, car charger, etc. 【MULTIFUNCTIONAL LASER TOOL】: The four 360° laser planes can be selected individually by separate H and V