Model EZFlow 2050 is designed to electronically deliver continuous, constantly controlled infusions and will meet CE 0197 certification. To operate, dial to set infusion rate in seconds, with flow rates ranging from 2 to 10 ml/hr. Choice of 100 ml or 260 ml sterilized reservoir box. Pump can be used multiple times, reservoir needs to be disposed of after each use. It uses 2 AA batteries, up to 400 hours at 1 ml/hr. Pump is portable weighing less than 200 g (0.44 lb).