»The main attraction of the power bank is its hand warmer function. Thanks to four adjustable heating levels, the device heats up quickly (within a few seconds) and reaches a maximum temperature of 55 °C. At the lowest level, the power bank heats up to around 35–40 degrees, which is a pleasant maintenance temperature that also guarantees the longest - up to eight hours - endurance. The heat is evenly distributed over the entire aluminum surface.«