Considering the use of a 6000 mAh battery, the M31 turned out to be a rather heavy device (191 g), but not enough to cause discomfort during prolonged use. The inconvenience, rather, can be associated with the size of the device, especially for those who are used to compact smartphones. For me personally, the dimensions of the M31 are quite suitable, you can’t control them with one hand, but to watch the video – that’s it.