--Featuring the latest multipronged measurements technology, a improvement from all previous versions. --It combines a tape measure, a triple-positioned leveling bubble and a laser level into one tool. --Designed for any situation where a straight line or accurate measurements are needed. --8-foot measurement tape, includes of metric and imperial precision linear measures. Note: Laser ranging error,that is given as "+/- 2mm at 10m and 25m". Specifications: Power by: 3 * AG 13 button battery(included)Product Size: 18.5 (L) * 6.2(W) * 2.8 (H) cmColor: Black Net weight: 172g Package includes: As your choice