The wire free MP3 player is especially designed for sport lovers. Just imagine what enjoyment it is when you are working out. Sport Running MP3 Music Player TF/ Micro SD Card Wireless Headset Headphone Earphone Features:Built-in TF card slot support up to 32GB TF card (TF card NOT included).Just

The wire free MP3 player is especially designed for sport lovers. Just imagine what enjoyment it is when you are working out. Sport Running MP3 Music Player TF/ Micro SD Card Wireless Headset Headphone Earphone Features:Built-in TF card slot support up to 32GB TF card (TF card NOT included).Just save your loved songs in TF card and then play them with this sport player.Doubles as a USB portable disk for your files storage.Supports MP3 WMA music format.Built-in rechargeable li-on battery. Charge by USB cable.3 Key-press: Play/ Pause, Volume / -(long press), Previous/ Next (short press).Comfortable and secure for most users: bicyclist, runners, joggers, walkers, etc.Enjoy your sports and music at the same time! Specifications:Audio format: WMA, MP3 S/N ratio ≥ 86dbOutput frequency: 20Hz—20KHzUSB: USB 2.0Battery: Li-po batteryPlaytime: music playback up to 4 hoursOperating system: Windows 98/ ME/ 2000/ XP/ Vista/ 7Item size: 15 * 13cm/ 5.9 * 5.1inItem weight: 35g/ 1.1ozPackage size: 19.5 * 16.5 * 7cm/ 7.7 * 6.5 * 2.8inPackage weight: 85g/ 3oz Package including:1 * Headset MP3 Player1 * USB cable