Straight from quirky Japanese gadget maker Thanko, is the X-Mini portable speaker for those inclined to go on a sound trip everywhere they go. The speaker measures a mere 50 × 35mm. To use, you just simply unlock it by unscrewing the middle part as you can see on the image above.

X-mini works with all devices that have a 3.5mm jack, although it does come with a 2.5mm jack adapter for those that have it instead. Recharging is done by connecting it to a computer via USB connection, and upon full charge of the internal battery, has four hours of playtime. It's now available in Japan through Thanko for around $21 and could come to the United States via Thanko's RareMonoShop.com arm.