Processing is cheap, but you should not be expected at this price. The LED may bring in total darkness a touch of light, but otherwise it is only there so that you can write on it.
Not that I would have expected that the advertising slogan ("within about five minutes at 8.5 ° C. (depending on ambient temperature) Chest") is true, but the "effect" tends to zero. Despite subsequent isolation (is only from simple plastic) with foam I never think a drink or anything more than 5-6 ° C Thermal difference to ambient temperature getting chilled. Sufficient to preserve the summer the chocolate in front of flowing away, but otherwise ... Since the device certainly is not suitable for outdoor operation or even approved, you will generally usually can expect 18 ° C or more ambient temperature and therefore certainly never given 8 reach 5 ° C. And certainly not in 5 min. Who likes can indeed times the heat capacity of water, the energy needed to cool down from 0.3 liters of water and the maximum possible power of a USB port (have since something of 5 W in the head) to sit down and work out how long it all must take no other losses. I type on a gut level "longer" on.
In addition, the fan is definitely not designed for continuous operation. At the beginning he was quite audible, but not so bad sensitive ears or headphone users no problem. After a few months of continuous operation (a refrigerator is I believe a device that is built for continuous operation ...) turns the fan still, but with a distinct clacking and therefore I would expect that he would soon give up the ghost. For this purpose there is but no longer come with me - the unit has landed in the e-waste.
