This multifunctional speedometer supports measurement of initial speed, launch speed and motion energy. Support free fall velocity measurement, such as BBs,. Equipped with memory function, multiple sets of calculation data are stored in memory to meet your various testing needs. LCD display, m/s, FPS, J, , FT, r/s multi-unit display. BT and APP synchronize data. you may try it.Features:Supports measurement of initial speed, firing speed and movement energy.Supports free fall velocity measurements such as BBs, steel balls and Leadballs.Equipped with memory function, multiple sets of calculation data are stored in memory to meet your various testing needs.LCD display, m/s, FPS, J, , FT, r/s multi-unit display.APP supports 8 languages adjustable, Chinese (Simplified), Chinese (Traditional), English, German, Italian, Japanese, Russian, Polish.Built-in high-sensitivity test sensor for high-precision testing with an error of 0.35%.