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The Promaster Tough Chronograph is built to really rough it out. It’s shock-resistant and anti-magnetic. It is also water-resistant to 200 meters. Therefore the internal construction of the watch casing is rather intricate.
Measuring 44 mm across (47 mm with crown and pushers), it has a real tool watch heft to it and is very prominent. With a lug-to-lug length of 52 mm, this watch is designed with people with medium and above size wrists. Even with my 6.75 inch circumference wrist, there is a slight lug overhang when I wear this watch.
To be visually compatible to the size of the watch casing, the lug width of 22 mm was chosen. However, the thickness is relatively thin at just 13 mm. Despite the need to have an intricate inner design for the shock-resistant and anti-magnetic properties, the designers were able to pack everything into the thinner watch casing. This was made possible due to the use of Citizen's Eco-Drive module, in this case the B612 which also has a chronograph function (this goes to show how thin Citizen can design a Eco-Drive module). The whole package weighs in approximately 190 gm.
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