1、It is easy to use, supports a variety of measurement modes, and automatically calculates. 2、Easy to store, multi‑data storage function, recording is more convenient. 3、Display cleaning, because the measuring range 50m, laser type 500‑535nm, <1mW. 4、Sturdy and durable, made of high‑quality ABS material, not easy to be damaged. 5、It is suitable for decoration, construction, surveying and mapping, and distance measurement. Item Type: Distance Meter Material: ABS Model: SW-50G Battery: 1.5V 3xAAA (not included) Uses: Decoration, construction, surveying and mapping, distance measurement Item SW-50G Measuring range 50m / 164ft Distance measurement accuracy ±2mm Continuous measurement function √ Area measurement √ Volume measurement √ Pythagorean measurement function Full mode Plus and minus measurement function √ Area and volume addition and subtraction √ Maximum/Minimum value √ Self-calibration function √ Voice broadcast √ Laser class II Laser type 500-535nm, ＜1mW Number of stored records 99 Automatically cut off the laser 20s Automatic shutdown 150s Full power working time 8000 times Voice prompt √ Storage temperature range -20℃~60℃ Operating temperature range 0℃~40℃ Storage humidity range 20%~80%RH Inclination measurement range ±90 Angle 1 x Rangefinder(Battery Not Included) 1 x Reflective Board 1 x Lanyard 1 x Carrying Bag 1 x Manual