Citizen reintroduces its famous 1970s watch, the Challenge Timer. This collectible edition AN3660-73X features an impressive turquoise/green dial that glows fully in the dark and is limited to just 4,000 pieces worldwide.
Iconic “Tsuno” (Bullhead) Design
- The word “Tsuno” means horn and refers to the distinctive “Bullhead” design, where the crown and chronograph buttons are located at the top of the case.
- This layout originates from vintage stopwatch wristwatches used in racing competitions.
- The stainless steel case has a diameter of 38 mm and a thickness of 11.7 mm, maintaining the same proportions as the original 1973 model.
Dial That Glows and Stands Out
- The dial has a unique turquoise/green shade and is full-lume, creating a stunning visual effect in the dark.
- It features black subdials for the chronograph and an internal tachymeter scale, with bold orange-colored hands for a retro feel.
- The date window is positioned at the vintage “4:45” spot on the dial.
Movement & Wrist Feel
- Equipped with an In-House Quartz movement (Cal. 0510), it offers an accuracy of ±20 seconds per month and a chronograph that measures up to 12 hours.
- The bracelet is made of steel with slim folding links, lightweight and features a sliding safety clasp for ideal adjustment.
Basic Features
- Material
- Metal Bracelet
- Strap Colour
- Turquoise
- Colour
- Green
General Characteristics
- Functionality
- Analog
- Chronograph
- Yes
- Mechanism
- Battery
- Size
- 38 mm
Important information
Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.