Coway. Offering a bidet feature is easy with the Premium Bidet product line. The BA-13 model was customized for U.S. homes to fit any toilet type or size, while the BA-17 eco-friendly model is self-powered using water pressure to generate electricity. Ideal for clients with specialized health needs, the bidets are equipped with self-sterilizing spray wands that use purified or filtered water for cleaning. Hands-free operation via remote control also promotes cleanliness. The units deliver warm water at a set, consistent temperature for comfortable operation. 213.480.1600.