My BM8180-03E. I like the classic military styling with simple functions: No batteries for lifetime of watch with ECO Drive system found in much more expensive models. Feels like I have a very expensive watch. Basic guy watch perfect for my EDC. The canvas wristband is both comfortable and unique. Has leather lining and comes with metal grommets that compliment its rugged look. The 37.2mm case diameter fits my small 6-7/8" wrists just right. It's not too thin either. The 9.5mm looks classic. Not one of those big Diver watches. Honestly, this is my new workhorse timepiece.  It was easy to set after reading the instructions.  My second hand lines up perfectly. This probably wasn't necessary, but when I first received it... I set the watch in the sun for 1/2hr, then I performed an all reset before making my time/date settings just for good measure. The etching on my case back says I received the E101 movement caliber, the front dial face says Japan MOVT N-E100. According to Citizen customer service, I received the next generation movement caliber as stated on the case back. Very satisfied with my purchase. Citizen quality plus the Eco-Drive, can't go wrong.