Sent without battery ,The battery type is 9V battery Product Features: 1.Plastic material (light weight and durable) 2.Relative/absolute measurement interchange at any position 3.With 2 built in magnets in measuring surface, which is convenient to be attached to the object measuring work piece 4.Power-off automatically in 5 minutes 3.Portable size, convenient to co-work with other measuring tools and enlarge measuring range Technical Parameters: 1.Measuring range: 360 2.Resolution: 0.05 3.Accuracy: 0.2 4.Repeatability: 0.1 5.Battery: 9V battery 6lWorking temperature: 0C-40C 7.Dimension: 57*57*30.5mm 8.Absolute zero measurement based on the horizontal surface