Brand SNDWAY Model SW-D40 Quantity 1 Color Black Material Plastic Features 1.9" LCD Max. measuring distance: 40m accuracy: +/-2mm; Continual measuring function: yes; Measuring unit: mm/in/ft; With area and volume measurement function; Pythagorean measurement: Full mode; With add and subtract measurement; Max storage: 99 units; With backlight key pressing sound; IP54 shell. Laser type: class 2 635nm Application Measuring volume area length pythagorean indirect measurement max. value and min. value Packing List 1 x Laser distance meter 1 x Carrying pouch 3 x AAA batteries (16cm) 1 x Strap (16cm) 1 x Chinese user manual 1 x English user manual