Mini Ball Style Rechargeable MP3 Player Speaker w/ SD Slot - Green
Color: Green - ABS material housing - Mini ball style design - Supports MP3 format audio files - Supports SD memory card up to 16GB - Output power: 3W (max.) - SNR: >/= 80dB - Frequency response: 200Hz~16KHz - With LED indicators and volume control - Built-in 570mAh battery - Charging voltage: DC 5 +/- 0.5V - Charging time: 2.5 hours - Working time: 6 hours - Supports Windows XP SP2 / Vista; Mac OS 10x - Comes with USB cable (70cm) and English user manual