... , long lifetime, low consumption and steady and reliable quality. It can be used in metallurgy, electronics, machinery, textiles,plastics, medical treatment ... , 0 99.9h, 0 999hd) Assign method: second, minute, hour can set by free selection e) Working power: AC 220V/50Hz ... ) Setting method: adopt key, among indicate range it can be willfully set. Settingvalue can't lose when it's power offc) Work power ...