MULTIPLE MEASUREMENT - With multiple measurement modes like distance, volume, area measurement, Pythagoras measurement, ensures you a fast work, perfect for home, construction and industries, especially indoors. Easy to use and easy to carry with mini size. OPERATIONAL PARAMETERS - Function of measured length, width and height, automatic calculation of areas and volumes; addition and subtraction The maximum measuring range of the instrument is 98ft / 30 meters, more suitable for indoor use. LIT LCD: Large backlight display provides users with better visibility in low light or no light working conditions. USB RECHARGEABLE - Built-in lithium battery, charging with a micro USB cable and a Micro USB port