[Portable Sports back Clip design］Clip Sport Mp3 player with High quality materials small and strong structure, Specially designed sports back clip allows you to take it anywhere enjoy music,Special design for sport and music lovers

[Multi-Function] Bluetooth Mp3 Player ,compatible with Bluetooth speaker or Headphones (this Bluetooth Mp3 player is a Bluetooth transmitter,not a receiver,it Can't pair with phones and cars) Support :Music player/Voice recorder/FM Radio/Pedometer/Bluetooth For enjoying Lossless Sound Music ,Support audio formats: MP3/WMA/APE/WAV FLAC.

[Expandable Up to 128GB]8GB Mp3 Music Player can save up to 2000 songs , expansion microSD card slot can support up to 128GB enable to download thousands songs at a time.you can carry your music collection and favorite anywhere.

[Long Time Playback ] Bluetooth Mp3 Player built-in lithium ion polymer battery Up to 20 hours of playback at medium volume after fully charged within 2-3 hours by USB Charging cable.

[Warranty and Note]30 days full refund and 12 months brand new replacement warranty for any quality issues.Used idoooz Mp3 player enjoy your music wherever you go .please feel free to contact our 24/7-customer service.