... inside --closed circle water cooling system.2) Electric starter alternator,with charge storage battery DC24V (two 12 V).3) Standard ... option.5) Completed parameter display ,all in english languge,with perfect protection and control function.low level fuel&water alarm ... ,adapt to all sensors...7) Stainless steel base with vibration pad.Green body and base,package :plastic wraped or wooden case.8 ...