The STANLEYTLM 40 Laser Distance Measure has a lightweight compact design and easily fits in a pocket It features one-button operation for point and click measurement function Its black screen with white letters provides better visibility in brighter conditions The Distance Measure runs on an internal Li-ion battery for a longer run time and no need to change batteries USB charging is available Specification Accuracy ± 60mm Range 12m Measurement Units metres feet and inches Power Li-ion integrated Protection Class IP54 dust and splash water