Ammon's items will scale to the level of your character (30-45) at the time you complete his quest. In addition, item enchantment values will fall into the range listed. Stats in the Wiki only represent the level 45 listed values.
Ring of Life
(Ring Finger, Ring)
Item level: 45
+ 246-293 Hitpoints 2,0-3,0% More hitpoints Regenerates 11-19 HP per second