Product Description IPOD/ ITOUCH Speaker Product Feature Model: IMUSIC8 IPOD/ ITOUCH speaker Compact and trendy design Retractable resonance cavity, which is easy to draw back and stretch and the sound is much better after stretch. Build-in FM Support external device: U-Disk, SD/ TF Card, MP3, MP4, PC, CD, DVD, Mobile phone Build-in rechargeable Li-ion battery fully charged can support to play 3 to 5hrs Product Specification/ Models Output: RMS: 2* 3W Impedance: 8ohms Speaker unit: 40MMx2 Power supply: DC 5 V 1A Built-in rechargeable Li-battery ( 1000MAh) Size: ( Draw back) 116mmX62mmX39mm ( stretch) 116mmX62mmX80mm Accessories AC adapter ( Optional) USB cable 3.5mm Audio cable Manual