This is one of the best designed products I have ever used. Yes it is a bit heavy, but by no means heavier than expected. To me the weight makes the phone feel much more durable, which it is. The additional battery life is unbelievable for heavy iPhone users. I personally do not like to hunt or always plug my device in to charge. I feel that an internal battery should last more than 3-4 hours of regular use but since it cant I highly recommend the Mophie Juice Pack Air.
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