I asked about warranty and no respond. The straps are too loose and the foot moves all over, they need to tighten up the straps great buy! I?ve never owned a pair of flip flops. Wanted to get a nice set of Bluetooth earbuds but the reviews for the Sennheiser CX 6. Never in my life thought i would wear anything even resembling crocs but 2020 has been rough enough i gave in and got these. In some instances, I noticed upon opening the battery port that there was a foul smelling odor coming from inside. So they has around 40h battery life and longer than this in total Great for those that like a headset to sit on the ear. Glad I purchased it.