The SONR Team Set X8 is an advanced team set consisting of 8 receivers and a radio transmitter. Talk with up to 8 swimmers simultaneously. Features SONR is a wearable radio receiver for swimmers, which allows the coach to improve their technique, during the training even when the swimmer's head is underwater. Shaped as a disc, it is located under the swimming cap to hear the voice of the coach. Details Includes: SONR receiver x 8 Goggle clip x 8 Charging cable x 8 Ear plugs x 8 Radio transmitter x 1 Radio charger x 1 Instruction manual x 1 Country of Origin: Imported