Model: SW-50 - Color: Black + Red - Plastic case material - 1.7" LCD green backlit display - Maximum measuring distance: 50M/164FT - Distance measurement accuracy: +/-2mm - Measurement unit: mm/in/ft - Laser Model: 635nm less than 1mW - Functions: Continuous measurement area measurement volume measurement Pythagoras measurement Add and subtract measurement Maximum/minimum measurement Automatic shutdown - Max storage: 20 - Powered by 3 x AAA batteries (included) - Package includes: - 1 x Laser Distance Meter - 1 x Carrying pouch - 1 x Strap - 3 x AAA batteries - 1 x Chinese manual