Explosive sound quality. For Use with: iPod; iPhone; iPad; Nintendo DS; PSP; and other 3.5 mm jack devices. This portable speaker provides explosive sound quality. Attach it to your phone, your mp3 player, or your gaming device and you're ready to blow your friends away! A portable keychain keeps it handy. Just charge it up and you're ready to go! Specifications: Frequency: 200 Hz-20kHz. Driver Unit: 36 mm. Impedance: 4 Ohms. Cord Length: 8.5 inches. Plug Type: 3.5 mm stereo. Attachment: keychain. Package Contents: 1 mini bomb speaker unit; 1 USB power cable. For Use with: MP3; Mac/PC; stereo; CD; gaming. This product is not manufactured or distributed by any of the aforementioned companies. CE listed. Made in China.