1)Headphones Jack:3.5 mm Stereo Jack 2)Audio Format: MP3,WMA,ASF 3)Built-in rechargeable battery

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2GB Red Fashionable Style Voice Recording MP3 Player with Speaker

Specification:Memory Type: Flash Memory Memory Capacity: 2GB Audio Format: MP3 WMA ASF Control Type: Button Connection Type: USB 2.0 Compatible OS: Microsoft Windows Vista, Windows 98/SE/ME/2000/XP, Linux 2.4.2, Mac OS 10Headphones Jack: 3.5 mm Stereo Jack   Battery Type: Built-in Rechargeable Lithium-Ion Battery Work Time: 3-5 hours  Microphone: Built-in Built in out Speaker: 0.5w Product Type: MP3 Player SNR: 65db Language: Multi-LanguagesColor: RedNet Weight: 0.035kgDimension: 85x30x10mm

What's in the box:Mp3 Player, USB Cable, User Manual, Earphone

2GB Red Fashionable Style Voice Recording MP3 Player with Speaker