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HiddenRadio and Bluetooth Speaker
Check out the simplicity of this miniscule device. To turn it on, you twist and lift the cap and the more you do so, the louder it amps--up to 80dB. HiddenRadio works with Bluetooth-enabled smartphones, tablets and computers, and uses rechargeable batteries that will keep it streaming music for more than 30 hours. If your device doesn’t have Bluetooth you can connect it via the HiddenRadio’s 3.5mm audio input. There’s a radio in there, too.