Like that it's compact to fit on my pocket t-shirt... has enough juice for a full charge on my smart phone... not bulky at all

Very handy to carry in my purse in case my phone needs a charge.

When a phone battery gets old, the internal resistance becomes very high so that demanding apps like the camera will crash the phone

Each full charge on the card would boost my phone from 15% to full in less than 30 minutes.

I phone compatible without the adaptor.

If they could make this reliable I would say this is a "must have" product, but unfortuantely I'm left around town with a dead phone

If you stick a little piece of velcro to the back of your phone case and the other side to this slim power bank you can charge your phone like Mophie or Zero lLemon charger.

Overall what I’m more surprised by is that the battery capacity seems considerably less than advertised charging my iphone x maybe 35-40% before showing the red light (when the phone was just sitting idle when eating at a restaurant)

When a phone battery gets old, the internal resistance becomes very high so that demanding apps like the camera will crash the phone

easy to pocket, easy to use, has I phone/ type C adapter in port on side ready to use.

great little phone backup to keep in your car, suitcase, or backpack - better yet, all 3

I had it connected for 45 minutes yesterday and it charged up the phone like a champ and had power left over

It fits in my wallet which is awesome because now that there aren't any decent phones with removable batteries I can still use my phone as much as I want and not have to worry about running dead with this thing.