The Bluetooth loudspeakers Grundig GSD 300 and Grundig GSD 320 have been developed for Android as well as the iOS world of the latest generation. While the technology inside remains the same, the versions differ in their power supply: the 300 version offers a flexible Micro USB connection, the 320 version a Lightning connection for mobile Apple devices. Both types have the power of 2 times 10 W and the Bluetooth unit with a reach of up to 10 metres in common.

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