Measures length up to 16 feet or five meters. Maximum in memory: 999 meters. Accurate to 1/16th of an inch/ 1mm. Excellent for carpentry works. Just press the button and it announces the length. Automatic shut-off. Measuring unit has its own belt clip. For use in imperial or metric measuring. Excellent tool for the visually impaired or low vision user. Requires a 9-volt battery (not included). Includes written directions and a free zippered case.