The Bosch GLL 3-80 CG Professional 360 degree Line Laser projects 3 x 360 degree green lines for excellent visibility. Bright green laser lines offer up to four times better visibility than red lines. Innovative CAL Guard monitoring and a Bluetooth connected smartphone app allow for remote-control use as well as contactless adjustments and high precision. High-powered diodes ensure high visual clarity while its 3 x 360 degree lines allow simultaneous horizontal and vertical levelling for highly efficient work. This line laser is developed for building floors, installing windows, mounting shelves, laying drainage pipes, building framework for drywall, and laying tiles. It is capable of levelling itself on non-level surfaces up to ± 4 degree in less than 4 seconds with excellent precision. This line laser is compact, easy to handle, and extremely robust. Due to the GLL 3-80 C Professional's Dual Power Source, it can be operated both with 12 V Li-ion battery and with standard alkaline batteries for added flexibility. Supplied with: 1 x Pouch.1 x Laser Target Plate.1 x BM 1 Professional Universal Mount.1 x L-BOXX 136. Specifications: Accuracy: ± 0.2mm/m.Self-levelling Range:±4 degree.Working Range: 30m.Working Range with Receiver:120m.Laser Diode:500 - 540 nm, < 10 mW.Laser Class:2.Levelling Time:4 Seconds.Power Supply: 12V Li-ion (NOT supplied) or 4 x AA 1.5V LR6 Batteries (supplied).Operating Temperature: -10-40 degreeC.Storage Temperature:-20-70 degreeC.Dust and Splash Protection:IP54 (except for the lithium-ion battery and AA1 battery adaptor).Tripod Thread: 1/4in, 5/8in.Weight: 0.9kg.