EP0063G Highlights Stylish design Supports TF cards up to 8 GB (not included) Great for sports USB 2.0 interface Main Features Audio Format WMA， WAV， MP3 Memory Built-in Memory  None Card Slot Card Supported 8GB TF Card (not included) Battery & Power Battery  Built-in Li-polymer battery Additional Features Frequency 20Hz to 20KHz System Requirements Windows 98 / 2000 / XP  Play Time 4 hours Data Interface USB interface Working Temperature -10°C to 45°C Color Green