Product introduction: 1. Name: IPX7 Waterproof sports Bluetooth music headset 2. Model: U5 plus 3. Style: in ear 4. Comfortable wearing: Comfort， fit the ear design， medical silicone earmuffs 5. CVC 6.0 noise reduction 6. APT-X Lossless sound quality Technical specification: 1. Bluetooth version: V4.1 2. Bluetooth use range: within 10m 3. talk time: 10h 4. music time: about 8h 5. Driver Diameter: 10mm 6. Frequency range: 20-20khz 7. Sensitivity: 104db +/- 3dB 8. Impedance: 16Mw 9. Mic: Yes 10. CVC 6.0 noise reduction 11. Sensitivity: -38db +/- 3dB 12. Color: Yellow， Black Package Included: 1x U5 Plus Headset 1x USB Cable 1x User Manual1x earhook