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Frekvens review: the modular speaker and light system by Teenage Engineering and Ikea. | by Roy Kim | Medium
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Amazon.com: Teenage Engineering OB–4 Portable Bluetooth Wireless Stereo Speaker with fm-Radio and Long-Lasting, Rechargeable 40 Hour Battery Life, Black : Electronics
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Teenage Engineering OB-4 Magic Radio Portable Stereo Speaker with Built-in Loop Recorder and Tape Transport: Amazon.co.uk: Electronics & Photo
![Amazon.com: Teenage Engineering OB–4 Portable Bluetooth Wireless Stereo Speaker with fm-Radio and Long-Lasting, Rechargeable 40 Hour Battery Life, Black : Electronics Amazon.com: Teenage Engineering OB–4 Portable Bluetooth Wireless Stereo Speaker with fm-Radio and Long-Lasting, Rechargeable 40 Hour Battery Life, Black : Electronics](https://m.media-amazon.com/images/I/712cZpichVL.jpg)