Prologic Scale Commander Digital Scale 40 kg Four buttons: On/Off, Record, Save, Delete. Stores up to 10 replaceable weights in memory. Large LCD display (41×26 mm) with blue backlight. 1 m measuring tape and thermometer included. Water resistant. Units of measurement for weight and temperature changeable (kg / lbs, C / F). Hold function. Works with 2xAAA batteries (not included). Automatic calculation of average and total weight.