Compact, basic design, no bells and whistles like an included torch but does exactly what it is supposed to do.
I have bigger capacity power banks but they are for very specific purposes, this is a general purpose, large capacity power bank at 20,000mAh. Two outputs (standard USB) and the one input (Micro USB) for charging it. The two outputs, although each giving up to 2.4A, combined give 3.4A and with the iSmart tech built in, it throttles the charging depending on what the device needs along with distributing the most charge to the device that needs it as well. Easy to charge as I am sure you have plenty of cables lying around the house like me. Although this does come with two for charging, different lengths (1′ and 2′). When charging, you can see the progress by 4 blue LED lights, each one showing up to 25% charge so all four lit and not flashing means 100%. When removed from charging, again, each light shows up to 25%, so three lights means up 75% remaining etc.
Like I say in the video, this is a little on the large size to be taking out if you want to top up your mobile during the day, but for bigger jobs or if you want to get 2 or three full charges into your phone if you are away from a socket for a couple of days then perfect. It comes with a nice carrying pouch to protect it from knocks and scratching to. Have a look at the video I did, it will probably give you a better idea.