With 44mm diameter & 50mm height is one of the smallest Bluetooth speakers on the market. Wherever you go, this speaker is always to carry in your pocket. Listen to your favorite music in the park, on the beach or during your break at school or at work. The speaker is finished with a rubber coating for a perfect grip. The speaker has two connection options; wirelessly via Bluetooth or wired via 3.5mm jack. Usage is simple: turn the switch on the bottom in Bluetooth or line-in mode, disconnect your smartphone or tablet via Bluetooth or the included cable & the speaker is immediately ready for use.