Plug PowerBlock Dual into your 100 to 240 volt AC power outlet and charge two USB devices while you use them. Works as a charger for many devices that charge via USB; just use the cable that shipped with your device and plug it into either of PowerBlock’s industry-standard Type-A USB ports.Brand: Griffin Technology Model: NA23061 Number of items: 1 Dimensions: 7.09″ h x 1.38″ w x 5.00″ l, .24 pounds Charge MP3 players and other USB devices, two at a time Delivers safe charging levels for most USB devices from almost any wall outlet SmartFuse circuit-breaker protection means no fuses to replace Compact for travel with fold-flat blades Charges Mp3 Players & other Usb Devices 2 At a Time 2A1A Per Port Smartfuse Circuit-Breaker ProtectionMost helpful customer reviews 41 of 43 people found the following review helpful. Does not charge two smartphones that pull alot of current by Anh Lai this supposedly has 1 amp per port. this is false, it does not. I have a Droid X and a Droid 2 in the house. It will not charge them both at once. they each require 850ma. It will however charge one of the Droids and one dumb samsung phone requiring much less current. this device is nice, but I wish it really pushed out 1A per port. It would work great for those who simply need to charge one smartphone and one device that requires less current, e.g. a bluetooth headset. a minor setback for me, but others may not be in the same boat. 20 of 20 people found the following review helpful. Works Better Than Expected by D. Redwood I bought this PowerBlock Dual Universal Charger to run my HP Multimedia USB powered speakers but hoped to be able to run my iPad as well. the iPad uses a 2.1 amp charger and the USB powered speakers requires 1 amp. I connected both the iPad and speakers to this charger at the same time and they both worked fine. I watched a video on the iPad while listening to the speakers at a high volume to determine if the charger can handle it. It not only handled the load without any problems, but it also charged up my iPad to a full charge. I discovered that there are two versions of this PowerBlock Dual Universal Charger. this one provides 1 amp per USB port and the other one produces only 500 ma per USB port. the good one advertises the 1 amp per USB port capability, while the other one does not. also, this one shows the 1 amp per USB port on its packaging and on the unit itself. by all means get this better one, not the less capable one, as it can handle more devices. I travel a lot and needed a small lightweight USB charger that can power my USB speakers, which saves weight and space. this can help avoid paying overweight charges at the airport which can be quite expensive (some portable speakers have a heavy power supply or built-in rechargeble battery that you must carry around). also, I like the fact it can handle an input of 100v-240v so it can be used in any country. Update: My daughter liked this charger so well that she got one for herself to power her iPhone and HP USB Mini Speakers. these mini speakers produce great sound from the iPhone, and this charger will power the mini speakers and charge the iPhone at the same time. 16 of 16 people found the following review helpful. Works perfectly well! by zhuchok some of the earlier reviewers complained that the charger is not powerful enough to recharge combinations of certain USB devices with higher than average power consumption. I wonder if they used the previous model of the PowerBlock. I tested this charger with all possible combinations of the three USB devices I use most: Kindle 3, BlackBerry Curve 8530, and iPod Touch 64GB. in all combinations I tested, PowerBlock worked fine charging the connected devices quickly. See all 55 customer reviews…