Wireless crane scale,kg/lb convertible,LCD display, portable indicator,Capacity: 1MT, 2MT, 3MT, 5MT, 10MT, 20MT, 30MT,50MT 1. Wireless crane scale, crane scale, dynamometer2. Continual operating 50 hours3 ... . Display refresh rate: 5 times/sec9. Continual operating 50 hours10. Wireless transmission distance: no less than 200 meters when unobstacled11. Built ...