The spring that closes the clip is weak and the rubber bumpers on the back of the speaker often come loose from day one. I've re-glued a couple of rubber strips twice already. The rest of the device works great.

To be honest, I had my doubts when switching from Clip+ to Clip 4. I miss the built in extra cable but the new design is much stronger. I'm not thrilled with the bass response, although it's nice and loud it's not as crisp as I'd hoped after being spoiled by the Clip+'s quieter but tighter bass, but I'm very pleased, especially after water damage through moisture. was the ultimate finish for my Clip+, which will not be a problem with the waterproof Clip 4.