Sports, Recreational Equipment HomeProductsSports, Recreational Equipment Inquiry Save to Favorites GO :::::Sort::::: Name Date Added Popular ↑ ↓ 5KM coaching system for open water swimmin... 5KM waterproof communication system for open water swimming,rowing,sailing,motorboat... Introduction-- this is our upgrade system based on our old swimming training system. Comes in Sep 2013 We know how difficult it is to communicate during water sports,especially underwater or long distance . That’s why our upgraded system “i-AYC” comes! I-AYC allows coaches/trainees to communicate in realtime during training even if the... Read More Inquiry Now Sports, Recreational Equipment Made in Korea Sport Products Made in Korea Rowing Boat Made in Korea triathlon intercom Made in Korea learn to swim Made in Korea swimming training Made in Korea motorboat Made in Korea