The bosch gll 2 15 professional line laser is a compact cross line laser for professionals it is small lightweight and versatile it has a robust design with a softgrip covering that protects against knocks and the pendulum lock ensures safe transport line mode is freely selectable comes with a target carrying case bm 3 wall mount and 3 x 15 v lr6 aa batterieslaser diode 635nm lt 1 mwoperating temperature 10 50degcstorage temperature 20 70degclaser class 2worki