
Received this beauty a few weeks ago and it was my first ever built in bluetooth. I have to say I was very surprised by the clear sound at high volume! I have a 4s battery, the voltage is 16.8v on 3 inch speakers. God this is great! Bluetooth range is good and I can use it for 14 hours straight with half the battery left for another 14 hours! a must have if you love DIY! Thanks.

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