A. B Crew 360°Self Leveling Laser Level Green Beam 5 Lines 6 Points LaserLevel
B Crew 360°Self Leveling Laser Level Green Beam 5 Lines 6 Points Laser Level Horizontal/Vertical Cross Line Straight/Tilt Line Rechargeable Dust Proof Rubber Touch Keypad Rotary Base. POWER SUPPLY: Rechargeable lithium battery can work over 5 hours with all beam lines on. And you can use it while charging it. Rechargeable battery is more cost-effective