Long battery life Yes, the Eucerin is oily. The right boot was OK. Probably okay for flip flop type shoes, but not for any real walking. This stuff smells awful. Its been a complete week on only one single charge. Sound quality good when headphones work ,the male & female connection dont sit right together,so sound goes off and on with a lot of cracking sound. Now that the earbuds are working, the sound is great--bass not too heavy, can hear the top notes. duraderos. Not sturdy, not big enough for a pair of shoes.