This mini speaker folds away to a tiny 2" X 1.5" (5cm X 3.5cm) just unscrew the top and the speaker opens and expands.

The speaker has a built in battery and is charged from a USB - Mini USB cable (included)

The speaker plugs into the 3.5mm jack on a phone or MP3 or into a 3.5mm - Lightning adapter for iPhones (not included)

The sound is great for such a small speaker.
This mini speaker folds away to a tiny 2" X 1.5" (5cm X 3.5cm) just unscrew the top and the speaker opens and expands. The speaker has a built in battery and is charged from a USB - Mini USB cable (included) The speaker plugs into the 3.5mm jack on a phone or MP3 or into a 3.5mm - Lightning adapter for iPhones (not included) The sound is great for such a small speaker.