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Watch Teddy's Review
Promaster Challenge Diver Automatic Blue Dial
Product Description
Overview
Reference
NB6021-68L
Case Size
41 mm
Case Height
12.5 mm
Lug To Lug
48.3 mm
Lug Width
20 mm
Water Resistance
200m
Movement
Automatic
Case
Bracelet Material
Super Titanium
Case
Super Titanium
Clasp Type
Foldover
Crown
Screw-down
Crystal Type
Sapphire Crystal
Dial
Blue
Lume
Luminous Hands/Markers
Movement
Caliber
Automatic 9051 (Hacking)
Features
Antimagnetic 16000
Power Reserve
42 Hour Power Reserve
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Brand History
Citizen
Founded in 1918, Citizen is one of the largest manufacturers of watches in the world and also one of few brands with a vertically-integrated production model, designing and manufacturing every component of all of the watches in Citizen’s vast offering. While perhaps best known for inexpensive, solar-powered watches from the Eco-Drive collection, Citizen also has a powerful enthusiast following largely associated with the Promaster collection of divers and tool watches best exemplified by the Aqualand diver’s watch.

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