Mineral crystal face on a watch this expensive?!

I love the look of this watch as well as the depth gauge. Very cool. However, I just realized that it has a mineral crystal. I can get a sapphire crystal on a dive watch that cost 1/3 this price. Very disappointed. And be careful, the "never needs a battery" is misleading. This is my third Citizen diver watch. After year 7 on the first I purchased, I sent it in for servicing and was warned by the customer service representative that the internal battery would need to be replaced soon.