Title: Laser Distance Meter Handheld Rangefinder Digital Distance Measuring Meter Indoor Rechargeable Electronic Device Aluminium alloy 30M Accuracy 2mm Features: Equipped with high-speed algorithm chip, this laser distance meter can deliver instant and precise measurement. It is capable of measuring length, area and volume. It can also be used for indirect measurement through Pythagorean theorem. It has mini size which makes it quite portable, widely used in construction industries, especially for large areas such as rooms, apartments, buildings, real estates, factories, etc. 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 150s. Stay Accurate - with self-calibration which allows users to calibrate the meter whenever necessary, with adjusting range from -9 to 9mm. Rechargeable Battery - built-in rechargeable battery has a large capacity of 220mAh 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: : SNDWAY Material: Aluminium alloy Color: Black Model SW-M30A SW-M30B Max. measuring range 30 30 Laser color Red Reference point 2(rear, front) Accuracy (2mm+ d*10^-4) Continuous measure no