Risest Technology Co. Ltd

Model Number: H-902-02-01-#7339 Brand Name: OEM Key Specifications/Special Features: Product's introduction:1. This product is a swim teaching gadget being used under water and let you enjoy life in amusement2. You can enjoy every sort of music formats through wireless (FM modulation) host3. People can change the closed state under water through the operation of bone induction which will do to get refreshing and resist fatigue4. Safety of command can be raised in the environment of hard hearing5. It's a very good assistant for coaching under water which settles the annoying thing of screaming in the throat6. Application fields: swimming, under sea expedition, under water ballet, sailboat, deaf and dumb schools7. Targets who uses this product: state swimming team, navy, spare time school of physical training8. Countries and areas now prevailing: China, Taiwan, Singapore, the US, Hong Kong, North Europe and the UK for over 20 countriesChooseour swimming training tool: bone conduction receiver and transmitter
We're selling swim teaching gadget which can keep you being needless to yell on the shore of swimming pool when you will give swimming lessons to your students
Students can clearly listen as well without any interfere to the oral instructions from you there on the shore of swimming pool by the implementation of the technology of bone conduction and complete efficiently the learning of swimming techniques
Specifications:
1.Receiving sensitivity:-113dBU
2.Input sensitivity:≤200mV
3.SNR:≥82dB, distortion: ≤0.7%
4.Frequency response: 20Hz-20kHz
5.Speaker: bone induction
6.Power voltage:DC 3.7V