You wouldn’t go hiking without water, SCUBA diving with out an oxygen tank, or sailing without a lifevest, so why do you keep your gadgets without a backup charge?
The Proporta Mobile Survival Kit includes a USB Mobile Device Charger (USB Rechargeable Battery) that charges devices from any standard USB port (so it works with ALL Proporta power/charging products in your car, home, office). It stores 3400 mAH of power for when you you are working hard, closing a deal, or showing someone pictures and you realize that your cellphone/PC/iPod/SmartPhone/digital camera is about to die.
With a fully charged Proporta Mobile Device Charger, you should be able to charge most mobile devices between three and five times from completely empty.
So for $44, get yourself some just-in-case juice.
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The typical SCUBA diver doesn't use an Oxygen tank, it's a tank filled with pure, dry, filtered, compressed air. Breathing pure oxygen at depth will cause central nervous system oxygen toxicity which in itself is not fatal but can cause you to spit out your regulator and drown during a convulsion.