... waterproof rfid chip, recordable waterproof chip, sound chips Sound module with waterproof function, idea choice for your pool toys.Applied for ... duration: 5 seconds to 270 seconds, even more if requiredComponents: PCB, IC, speaker, microphone, LED indicator, batteries, wire harness, ... , sound books, LED lights.We have more than 10 years experience producing electronics products since set up in 1996 ...