... pump system--250w wind pump, air switch and 10pcs of jets 5). Ozone--water purification (only worked on control B) ... bottom lamp, FM radio Control Panel B--LCD, whirlpool controller, water level detector, lock, chromatic bottom lamp & FM radio Control Panel ... .2. Safety and durableare worthy of implicit belief.Protection switch, air-switch, much more safety, UL quality certification.3. Humanization ...