Product sound quality: HD high definition sound quality, follow the music to move it, take it to heavy , real high definition stereo sound quality, without any noise. Support listening to songs and answering calls, listening to songs for subwoofer stereo. Grade 8 waterproof can be soaked in water for 24 hours, can swim, waterproofThe product uses Bluetooth version V42, Action ProgramBattery capacity: 160mah transmission distance: 10 meters charging time: 1-2 hours noise reduction: intelligent noise cancellation technology DSP integrated high-definition microphone. Smart compatibility: compatible with all mobile phones with Bluetooth function, , laptop, sound bar, QQ music, movies, etc., all mobile phones, with no reasons that cannot be connected, you can be to buy8G comes with a memory that can be used as a USB flash drive and can save about 2000 songs. Each time the Bluetooth headset is connected to the phone, the Bluetooth headset will automatically connect to the phone when it is turned on, which is practical and faster. Product sound quality: HD high definition sound quality, follow the music to move it, take it to heavy , real high definition stereo sound quality, without any noise. Colour:Red + black Material:Metal + plastic Size:About 56x437x338mm Package Contents: 1 * host 1 * charging cable 2 * ear cap Important: Bluetooth does not work underwater, as water interferes with the connection. Use the integrated 8GB flash drive to load music into the device first and fix the omni-seal waterproof ear tips to use for swimming or for any other underwater activity. Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.