The Stanley measure laser direct and continuous measurement, area and volume calculation, compatible with most Smart Phones, tablets and computers, supplied with batteries (2xAA) and operating instructions. Features: One-button operation for point and click measurement function Ultra-compact and lightweight for ease of use and convenience Runs on internal LI-ION battery for longer runtime – no need to change batteries (approx. 1000 measurements on a full charge) IP54 rated for better protection against dust and water splash Black screen with white letters for better visibility in brighter conditions USB charging available Specifications: Colour: Yellow Batteries Required: Yes Model Number: STHT77666-0