ANENG G50 Smart High-Precision Laser Rangefinder Green Laser Distance Meter 30 Set of Data Storage Autonomous Calibration Multi-function Tool Specifications: Model: G50 / G70 / G100 / G120 (Optional) Measuring Range: 50M / 70M / 100M / 120M (Optional) Material: ABS Measurement Accuracy: ±1.5mm* Reference Selection: 0.5-1S Benchmark Selection: Front Benchmark / Back Benchmark Unit Selection: m/inch/feet Area Calculation Method: √ Volume Calculation Method: √ Pythagorean Calculation Method: √ Height Difference: √ Addition and Subtraction Function: √ Data Storage: 30 groups Laser Grade: Class II Battery: 2 * AAA batteries (Not included) Battery Life: 10000 Operating Temperature: 0℃~40℃ Storage Temperature: -25℃~70℃ Item Size: 110 * 45 * 24mm / 4.33 * 1.77 * 0.94in Item Weight: 80g / 2.82oz Package Weight: 162g / 5.71oz Package Size: 15.8 * 9.8 * 4cm / 6.22 * 3.85 * 1.57in