The Bosch GCL 2-50C Self-Levelling Combi Line and Point Laser Level is apart of the Simply Connected range of tools from Bosch which features the ability to connect the tool via Bluetooth or a compatible mobile phone and via the Bosch App enable you to control the level hands-free. Being a dual power device the Bosch GCL 2-50C can run from a 10.8v/12v Lithium Ion battery pack or using the included adapter 4 AA Batteries. SpecificationsLaser diode: 635650 nmOperating temperature : -1050 °CStorage temperature : -2070 °CLaser class: 2Working range: 20 mWorking range with receiver: 50 mAccuracy : ± 0.3 mm/mSelf-levelling range: ± 4°Dust and splash protection: IP 54Tripod thread: 1/4"Colour of laser line: redProjection : 2 lines / 2 pointsPlumb point accuracy : ± 0.7 mm/mCompatible laser receivers : LR 6 + 7 Features and BenefitsHorizontal and vertical laser lines and two-centred plumb points with optimal visibilityVersatile to use