This multifuncitonal velometer support measuring initial velocity, firing speed and energy of motion. Support free falling speed measurement, such as BBs, Steel balls and Leadballs. Equipped with memory function, multigroups of calculating data in memory to meet your various testing requirements. LCD display, multiunits display of m/s, FPS, J, J/c㎡, FT, r/s. BT and APP Sync Data. You can have a try.Features: Support measuring initial velocity, firing speed and energy of motion. Support free falling speed measurement, such as BBs, Steel balls and Leadballs. Equipped with memory function, multigroups of calculating data in memory to meet your various testing requirements. LCD display, multiunits display of m/s, FPS, J, J/c㎡, FT, r/s. The APP support 8 languages adjustable, Chinese (Simplified), Chinese (Traditional), English, German, Italian, Japanese, Russian, Polish. Built in high-sensitive testing sensor for high accuracy testing, the error is 0.35%. Mobilephone supports IOS and Android system. BT and APP Sync Data.Specifications: Name:Velometer Material: plastics Battery: 1 * 3.7V, 400mAh battery (included) Input: USB DC5V BT version: BT 2.0 Item size: 130 * 110 * 60mm / 5.12 * 4.33 * 2.36in Item weight: 250g / 8.82ounce Package size: 170 * 160 * 70mm / 6.69 * 6.30 * 2.76in Package weight: 520g / 1.15lbPacking List: 1 * Velometer 1 * Stand 1 * USB Cable 1 * Guideline