Best Rotary Laser Levels 2020 Top 5 Best Rotary Laser Levels ReviewThe seller is trustboy1983 and is located in New York, New York. Leveling Accuracy Horizontal ±20 Vertical ±20.360 rotary laser leveling device 500m range red beam self-leveling waterproof. Power Supply DC 4.8-6V (4 sections of NI-MH batteries or 4 sections of NI-MH rechargeable batteries).