DeWALT DCE089D1G 10.8V 3x360° Green Beam SelfLeveling Cross Line Laser Express
Laser specification: CLASS 2. 3sided 360 ° level line without square. Working range: 30m (Indoor 30m, 60m when using receiver). Works with Di Walt 10.8 V battery and AA battery (kit). Weight: 4.5 kg.