I love the look of this charger. I dont think Ive ever used them off charge enough so that they ran out of juice so I cant really comment on how long the charge lasts. (I guess having small hands is an advantage for E-sport pros?) I only wish they came in wides or half sizes because they are narrow,but Im not too worried because I know they are new and will stretch some. I ordered my usual size 9 & Loved these & really suffered for fashion. They are soft and very comfortable on the ears. I love these adorable flip flops! My ears are to big for them to fit correctly. Fully charged. My qc never had this clamping feeling before (and I used them for 9 hours straight on my first use as I got them at the airport).