a lot of cheap android boxes {not all} will have a cheap small battery inside to keep time correct when not powered on, these do not recharge on most boxes, and will eventually run out after a couple of years, leaving you with the wrong {reset} time and date, and leading to you being told your box is old ,buy a newer model, but this will happen again with the new model, although by the time the battery runs out, it will also be an old model, so you buy a new model and by the time the battery runs out, it again will be an old model, ensuring you buy anew model again, a lot of small tech is the same, just think of your old phone, how many bought a new one because their battery gave up.