Quick DetailsPlace of Origin:Guangdong, China (Mainland)Brand Name:OEMModel Number:H-902Type:Handheld, swimming training equipmentDimensions:15*5*5cmFrequency Range:20-200MhzStorage Channel:7 channelsTalk Range:150mCertification:CE/FCC,Rohscommunication range:150-200 mWaterproof grade:IPX10Application:swimming training, surfing, kiteboarding, other water sport trainingunderwater Signal receiving depth:3 metersworking time:3.5-4 hourscharging time:3-4 hoursMOQ:10pcsFeature:good communication, high-qualitySupply AbilitySupply Ability:2000 Piece/Pieces per WeekPackaging & DeliveryPackaging DetailsGift box + cartonPortShenzhenLead Time :1-2 days after payment confirmed

This bone conduction technology headset receiver will make a big difference for the swimming  coaches to do the group swimming training , it will help them  instruct much more swimming learners (especially beginners)at the same time and help swimming learners  achieve their goals quickly. 

One transmitter could instruct  multiple headsets at the same time, not maximum limits

Featured by bone conduction technology and great waterproof performance,and excellent communication quality.