Goggles of Night

Wondrous Item, Uncommon

While wearing these dark lenses, you have

If you have Darkvision, you can see in Dim Light within a specified range as if it were Bright Light and in Darkness within that range as if it were Dim Light. You discern colors in that Darkness only as shades of gray. See also Exploration.

out to 60 feet. If you already have

If you have Darkvision, you can see in Dim Light within a specified range as if it were Bright Light and in Darkness within that range as if it were Dim Light. You discern colors in that Darkness only as shades of gray. See also Exploration.

, wearing the goggles increases its range by 60 feet.

Source: Dungeon Master's Guide, p. 265