Features: Drop-resistance within 2 meters high. Handy and easy to use everywhere. Use laser diode from Germany. Self-leveling mode within 4° degree. Flexible mounting on tripod(not included) and support to turn the device around at 360 degree. Specifications: Accuracy of Level: ±4.5mm/10m, ±2.3mm/5m, ±0.45mm/1m Accuracy of Horizontal and Vertical: ±4.5mm/10m Level Compensation Range: 4°±1° Quantity of Laser Line: 2 (1 horizontal line, 1 vertical line) Work Distance(laser line): 10m Laser Type: 635nm ±5nm Laser Color: Red Laser Safety Class: CLASS 2 Power: IP54 Battery: 2x1.5V AA (NOT included) Working Hours: ≥10h Operation Temperature: -10~50℃ Storage Temperature: -20~70℃ Size: 7.5*6.5*7cm/3*2.6*2.8in Weight: 272g(approx.) Package Includes: 1 x Laser Level (batteries and tripod are NOT included) 1、Drop-resistance within 2 meters high. 2、Handy and easy to use everywhere. 3、Use laser diode from Germany. 4、Self-leveling mode within 4° degree. 5、Flexible mounting on tripod(not included) and support to turn the device around at 360 degree.