Green laser detector/receiver for Leica, Topcon, Rugby, Spectra rotary laser levels with a wavelength of 515 Device size (including shell) 140mm x 68mm x 25mm This detector is only suitable for green beams with a wavelength of 500 to 540nm Beam reception indicator: LCD (front and back) / buzzer Power supply: 1 x 9V batteries (not included) Operating time: 40 hours Detection accuracy: 1mm and 5mm Weight: 200g Battery level indicator on the LCD screen. Acoustic and visible indicators. (Sound can be turned on or off) Beam Color: Green Product: Laser Detector/Receiver MPN: Green Laser Detector Package Contents 1* Green Light Laser Detector Remarks: 1. Due to different measurement methods, the measurement allows an error of about 2-3 cm. This situation is not a quality problem. (1 inch = 2.54 cm) 2. Due to different lighting and screens, the color of the product may differ from the original color. Please prevail in kind. Thank you for your understanding, have a nice day!