♦50-hour battery (rechargeable), 4.3'' color LCD mult-line display all integrated into a rugged, watertight enclosure. ♦± 0.5% high accuracy flow measurement. ♦Data logger function. ♦The heat measurement function by configuring with paired temperature sensors. ♦Non-invasive transducers. ♦Wide bi-directional flow range of 0.01 m/s to 12 m/s. Wide liquid temperature range: -35℃~200℃. ♦Works reliably in both clean and somewhat dirty liquids with turbidity<10000ppm. ♦Lightweight and easily transportable in box. ♦With the ability of Dynamic zero.