I saved my car's battery by using this $17 Zotree portable FM and Bluetooth Stereo speaker. Trust me.! It is really awesome with a cinema surround inside my car and I highly recommend everyone to get it. It sells for $17 in Amazon https://www.amazon.com/dp/B06WRRJ732/ref=cm_sw_r_cp_apa_i_ZR.9EbKZK64M0
Yes, we used an app last time we went.
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