Ive gotten 2-1/2 charges from one box charge. Ive found that cheaper, "marsh Mallow" earbuds work much better for me. These set of charms can be used for any age, I?m nearly 21 and although my mom makes fun of me for being ?childish? I love the character it gives my crocs:)) I sent them back as soon as I opened the box! I LOVE the diamond pen! The boots didnt go as high up the legs as my daughter thought they would, but otherwise, she rates them a 4. There are many features that I am still discovering, and the applications work seamlessly, so far. The sponge part is a little to big for my taste, but it?s not like it?s a deal breaker. In addition, it has a simplistic design that I really like. Llego a tiempo, completo y muy bien, fue muy facil configurarlo y hasta hoy ha trabajado de maravilla, aunque lo de las 4 camaras no siento que seaalguna ventaja.