OB-4 Black is a portable hi-fi radio in retro style from the Swedish brand Teenage Engineering. The radio is designed to be played outdoors and in public environments, but fits just as well indoors and becomes a nice detail in, for example, the kitchen. The speaker comes with a foldable handle that makes it easy to carry. The handle can also be used as a stand. The radio is equipped with two woofers and two tweeters powered by two 38W amplifiers. It comes with built-in Bluetooth for easy connection to, for example, your mobile phone. With the built-in and rechargeable battery, you can listen to music for up to 72 hours on one charge. It is an updated and modern radio that comes with many unique features. The radio can memorize and save everything you listen to into a two-hour loop tape, allowing you to rewind, record and listen again. It can be connected to the wireless remote control Ortho Remote, which you can also find here at Nordiska Galleriet.