Grumpy Old Geeks Products JBL Flip 4 Product JBL Flip 4 2 mentions in 1 episode A waterproof portable Bluetooth speaker that a host says sounds good for its size and price. Mentions 458: Fearsome Turtle Jul 25, 2020 1:03:06 I got the JBL Flip 4 waterproof portable Bluetooth speaker 1:03:22 I was concerned about the sound quality because it is very small. Sounds great.