Features: Millimeter Precision - equipped with high-speed algorithm chip and upgraded lens, this meter delivers stable and precise measurement with accuracy of 2mm. Capability - 0.1s quick measurement of distance, area, volume, indirect measurement through Pythagorean theorem. Practical Functions -unit switchable among meter (m), inches (in), feet (ft); auto-shut off in 60s. Support easy storage of 50 groups of data. Stay Accurate - with self-calibration which allows users to calibrate the meter whenever necessary, with adjusting range from -7 to 7mm. Rechargeable Battery - built-in rechargeable battery has a large capacity of 500mAh and can be easily charged via Type-C USB cable. Mini Size - it's small enough to fit in any jacket or trouser pocket, widely used in interior decoration, indoor design, construction field. Specifications: Model: S40 / S60 / S80 (Optional) Measuring Range (no reflecting plate): 0.05-40m/60m/80m Measuring Accuracy:+/-2mm Unit: M/in/ft Measuring Time: 0.1-3s Laser Grade: Grade II Laser Type: 625nm < 1mw Dustproof And Waterproof Grade: IP54 Storage Data: 50 sets Electronic Level: 0-90 (1 error) Automatic Laser Shutdown: 25s Automatic Shutdown: 60s Characters Display: Reverse display LED Measurement reference switching: Data clearing: Electric quantity display: Signal intensity indicator: Continuous measurement (max. and min.): Add, subtract (distance, area and volume): Area, volume and Pythagorean theorem measurement functions: Operating temperature range: 0-40 Storage temperature range: 25-60 Battery: Built-in 3.7V 500mAh lithium battery Power Supply: Type-C charging cable Material: aluminium alloy Item Size: 110 * 32 * 18 mm / 4.33 * 1.26 * 0.71 inch Item Weight: 60g / 2.12oz Package Size: 14.5 * 7.3 * 4 cm / 5.71 * 2.87 * 0.16 inch Package Weight: 120g / 4.23oz Package List: 1 * Laser Distance Meter 1 * Type-C Charging Cable 1 * Lanyard 1 * User Manual (English)