Arguably the best reviewer of bluetooth speakers on Youtube or anywhere else, Oluv also known as ClavinetJunkie unboxes and compares the JBL Flip 4 to a number of other speakers including the JBL Flip 3, the Charge 3 and the Onyx Mini. Not surprisingly the Flip 4 is an improvement on the former model Flip 3 with deeper bass, better highs and a fuller, richer sound. The Flip 4 also improves on its predecessor by now being fully waterproof. We've included both the first look as well as Flip 3 vs. Flip 4 videos above so watch them and let us know what you think in the comments below. Will you be buying a JBL Flip 4? We'll leave a link below to purchase from JBL.