This is an exclusive limited edition Frogman! The DW 9900 edition is a frogman with a smaller profile, yet retaining the classic chunky and rugged look. This model has a Titanium case, and this rare metal makes it lightweight, and rust-proof! 
 The frogman is also 200M waterproof, with an ISO rating suited for diving. This limited edition is the Mad-Dog expedition edition, who were an extreme-environment exploring group. They are named after their mascot, a german shepherd which can be seen in the cool EL backlight! 

 This watch has the following features:
 -Stopwatch 
 -Timer 24hrs
 - Auto-Backlight
 - 200M ISO-rating water resistance 
 - Dive timer
 - World Time 
 - Personal ID ( Passport Number, Blood Type )
 - Dive Data 
 - Dive site ID
 - 12/24 Hour time 
 - Auto Calendar 

 This watch comes from my personal collection in excellent condition as you can see from the photos, and the battery was replaced by official Casio UK a few weeks ago. Thank you for looking, and have a good day! :)