Bosch GRL 600 CHV Professional Rotation Laser with Bluetooth® connectivity, takes construction site levelling to new heights of precision and efficiency. Green beam technology delivers higher visibility in different lighting conditions. Built to operate in rough site conditions and bad weather, withstanding up to 2m tripod tip-over and meeting IP68 dust and water protection standards. Using the Levelling Remote App for settings overview and remote control saves time and allows total focus on the job. Long runtime convenience is provided by a dual-power option that uses Bosch rechargeable 18 V Li-ion or alkaline D-Cell batteries. Optimal convenience thanks to high-tech features such as display, dual slope, slope memory, and high-quality receiver (LR 65 G Professional) Best used on outdoor levelling and grading jobs as well as interior wall, ceiling, and HVAC installation. Supplied with: 2 x AA 1.5V LR6 Batteries. 4 x D 1.5V LR20 Batteries. 1 x BA 1 Professional Battery Adaptor. 1 x LR 65 G Professional Laser Receiver. 1 x RB 60 Professional Receiver Bracket. 1 x L-BOXX 374. Specifications: Accuracy: +-1.5mm at 30m* horizontal (*plus use-dependent deviation) , +-3.0mm at 30m* vertical (*plus use-dependent deviation) Self-levelling Range: +-8.5% (+-5°) Working Range: 70m. Working Range with Receiver: 650m. Laser Diode: < 1 mW, 500 - 540nm. Laser Class: 2. Operating Temperature: -10-50°C. Storage Temperature: -20-50°C Dust and Splash Protection: IP68. Power Supply: 18V Li-ion or 4 x D 1.5V LR20 Batteries (Supplied) Tripod Thread: 2 x 5/8in. Weight: 4.3kg with 4.0Ah battery, 4.6kg with alkaline batteries.