The glasses are without the original box and charger. Of course, I bought the head strap because the one that comes with it is not comfortable at all. This one is more comfortable because it distributes the weight, and also it has a battery, so if it runs out, you can connect the cable from the strap itself, and thus you have a 2-in-1: comfort + longer battery life. It is known that the glasses' battery is weak without the strap, giving you from an hour and a half to two hours, but with the strap, it reaches approximately 6 hours. 128 GB