Brunton Metal 4400 Portable Power Backpack

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This is a great way to charge your smartphone on the fly, as you go about your busy day. It's compact enough to easily fit in your briefcase or pack. Charges via USB port in four hours. It can also be charged via a Brunton solar charger, sold separately. High-grade lithium-ion battery is long lasting and will not hold a memory. Holds approximately four smartphone charges. It will also charge...
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