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This Bluetooth speaker looks just like a sci-fi alien robot!

Gravastar Mars’s Bluetooth speaker! It’s so cool! The shape design is so futuristic! Just like a robot in a sci-fi movie. The metal texture and sound quality are also pretty awesome! Bass, accent, and stereo are all great!

The connecting speed of Bluetooth is very fast. And you can adjust the volume manually by touching and sliding! 

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