Product sound quality: HD high definition sound quality, the music to move it, take it to heavy bass, real high definition stereo sound quality, without any noise. Support to and answering calls, to for subwoofer stereo. Grade 8 waterproof can be soaked in water for 24 hours, can swim, waterproof.The product uses Bluetooth version V4.2, Action .Battery 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, tablet, laptop, sound bar, QQ music, , etc., all mobile phones, with no reasons that cannot be connected, you can be to buy.8G comes with a memory that can be used as a USB flash drive and can save about 2000 . 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, the music to move it, take it to heavy bass, real high definition stereo sound quality, without any noise. Colour:Red + black Material:Metal + plastic Size:About 56x43.7x33.8mm Package Contents: 1 * 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.