Note load times for solar - as well Battery

Well made, built useful and good to use (nice device), price - performance is good.
As an external battery very good and powerful: for charging smartphones, iPod, small camera etc. its capacity (when fully charged) is sufficient several times. Even the loading on the PC goes without problems.
As solar charger: charging by the sun is so ne thing: lasts and lasts ...
The panel provides loud inscription (which must be sought, should be on the Web, unfortunately hard to find ...) at 5V approximately 0.7 watts, or about 140 mA. The battery (3.7 V - LiIon) 5600 mAh. Calculated with the indicated. Losses of electronics (converters, etc.), resulting in a charge time (empty to full) of (roughly) about 35 hours That says my experience.
Put another way: a whole day in full sun - no clouds or rain - the device reasonably aligned and repeatedly tracked, yields about 1/5 charge. According to my experience: 2 sunny days to charge gives 1/4 charge.
Thus, the device is with me all the time on the windowsill on the south window.
The solar charging is so advertised, but is poorly documented. Therefore, I only 4 stars.