High Accuracy Laser Distance Meter USB Rechargeable Dual Laser Measuring Device for Architects Engineers SWDR60 Features:<br> 1Infrared Measurement: Laser distance meter adopts advanced infrared measurement technology, high accuracy, accurate and reliable measurement results. 2Bidirectional: Digital laser distance meter is equipped with bidirectional laser, which is easy to measure in different environments and has a wide range of applications. 3Compact and Portable: Dual laser distance meter adopts humanized design, easy to carry and operate, easy to realize various measurement tasks. 4Multifunctional Design: Digital laser measurement tool has a multifunctional display, intuitively displaying the measurement data, which is convenient for users to consult at any time. 5Durable and Reliable: Laser distance measuring device is made of durable material and carefully crafted to ensure long service life and stable and reliable performance.<br> Specification:<br> Item Type: Laser Distance MeterProduct Material: ABS, PC, Aluminum AlloyMaximum Measuring Distance: 60m (One Way), 120m (Two Way)Inclination Measuring Range: 90Distance Measurement Accuracy: (2mm + d x one in ten thousand) x (unidirectional)Laser Class: IILaser Type: 630-670nm, <1mWStorage Record Number of Strokes: 100 StrokesAuto Cut Off Laser: 20 SecondsAutomatic Shutdown: 180 SecondsBacklight Time: 60 SecondsBattery: 3.7V 850mAh Polymer Lithium Battery (Shipped with Built in Lithium Battery)Charging Time: About 1.5 HoursCharging Specification: DC5V 0.75A Type CFull Charge Operating Time: 8000 Times in One Way, 5000 Times in Two WayStorage Temperature Range: -20C to 60COperating Temperature Range: 0-40Storage Humidity: 20%-80%RHSize: Approx. 115x50x24.5mm / 4.5x2.0x1.0in Gross Weight: 330g/11.6oz<br> Package List:<br> 1 x Distance Meter1 x Charging Cable1 x Lanyard1 x Storage Bag1 x English Manual<br> Note:<br> All data are measured manually, and there are certain errors in the measurement results.