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The internal speaker is so quiet my child can't hear it at all even at full volume when the car is running. Also, there's very little or vague instruction on how to install. There are some cables to hook up external speaker if you want to buy them but no instruction how to do this.
I bought these because I thought it was Bluetooth headphones. It might be but it came with headphones you plug in and the manuals basically just about the remote. I enjoy it, it works well. If I would’ve known it wasn’t easily Bluetooth compatible and doesn’t teach you how to do it, and the menu options are vague, I would’ve bought another one for maybe cheaper.