Citizen Eco-Drive World Time Skyhawk Chronograph Model C651

The Artifact Before the Apple Watch, there was the Skyhawk. This isn't just a watch; it is a flight computer worn on the wrist. Designed in the era when "tool watch" meant a literal survival instrument, the Skyhawk is a masterpiece of information density.

The rotating slide-rule bezel isn't pure decoration—it allows a pilot to calculate fuel consumption, airspeed, and distance on the fly. The dial is a dense interface of analog precision and digital utility, offering a maximalist aesthetic that feels ripped straight from the cockpit of an F-14.

The Machine Powered by Citizen’s legendary Eco-Drive technology, this machine feeds on light. It never needs a battery change, making it the ultimate "set it and forget it" companion for travel.

The Brain: The C650 movement manages three world times, a chronograph, a 99-minute countdown timer, and three independent alarms.

The Interface: A hybrid analog-digital display that allows you to track Home Time and UTC simultaneously—essential for anyone who lives their life across time zones.

The Condition Grade: Hangar Worn / Wabi-Sabi. This specific artifact has seen active duty.

Bezel & Case: The stainless steel shows honest, heavy wear, particularly on the slide-rule bezel ring. These aren't defects; they are the scars of a tool that was actually used.

Crystal: Shows minor signs of life consistent with its age.

Bracelet: Original stainless steel link bracelet with solid end-links, showing desk-diving marks and stretch consistent with a trusted daily driver.

The Spec

Maker: Citizen

Model: Skyhawk Eco-Drive (C650 Series)

Movement: Solar-Powered Quartz (Cal. C650)

Case Dimensions: 44mm Width (The "Pilot" stance)

Complications: World Time (30 Cities), 3 Alarms, Chronograph, Timer, Slide Rule Bezel.

Material: Solid Stainless Steel

Why It Belongs Here: We love objects that don't apologize for their complexity. The Skyhawk is unapologetically technical. It celebrates "button clutter" and "dial density." Ideally suited for the traveler, the engineer, or anyone who appreciates a machine that can do more than you ask of it.