I would like the manufacturer of this fine watch to explain such categorization!
Walked into the Citizen boutique and asked to be directed to the mechanical watches. I was instantly struck by this stunningly beautiful and elegant but also rugged dive watch. The Myota 9012 movement is the smoothest seconds hand sweep I own and rivals my Swiss pieces. This watches specs are tremendous also, you can read them for your self so I wont repeat them. I will give special mention to the lume which is fantastic! Very easy to read all night. The Citizen warranty is also unheard of. You will love the watch.
I am a watch enthusiast owned Swiss watches like Rolex, Omega, Rado, Revue Thommen to Japsneses watches like Seiko, Orient. The craftmanship of the Citizen Grand Touring is by far the best, nothing come close to this perfection.
I own many timepieces. Swiss, Japanese, Russian Etc. Some costing twice as much as my Citizen Signature. Since I picked this one up 4 months ago, it has not left my wrist. Which is unheard of with my collection of 40+ watches. I'm actually thinking of selling off many of my timepieces, because I don't wear them anymore. The fit and finish rivals watches selling for much more. Its an amazing timepiece that will not disappoint you.