Last twice as long as the standard battery, but obviously takes longer to charge. Definitely worth it for the extended battery. Makes the phone considerably larger and heavier but didn't bother me at all. Definitely not waterproof anymore but I lost the charging cover anyway. There's decent room next to the battery to store some cash. The cover is two stage: One clicks onto the phone and then the rubber case fits snug over it. The rubber case has started to get a little loose around the sides of the phone but isn't too bad. Some larger 3.5mm headphone jacks won't seat properly but the charging port does not have this problem