These goggles are a rushed prototype version of the standard. But they work-- most of the time.

While wearing these dark lenses, expend 1 charge to gain darkvision out to a range of 60 feet for up 2 hours per charge. If you already have darkvision, wearing the goggles increases its range by 60 feet.

This device holds up to 4 charges per day and loses all charges during a long rest. After a long rest roll a d20. On a roll of a 1, it regains 1d4 -1 charges. Otherwise, it regains all charges.

Notes: Sense: Darkvision, Detection, Eyewear