A 1970s bullhead chronograph icon, reborn as a light-powered racing watch — "Tsuno" means horn in Japanese, named for the twin pushers that crown its case like a bull ready to charge.
Lexor Miami is proud to offer the Citizen Promaster Tsuno Chrono Racer AV0104-06W — a limited-edition revival of one of the most distinctive chronograph silhouettes ever made, reborn with modern Eco-Drive technology and a motorsport soul.
Few watch designs are as instantly recognizable as the "bullhead" chronograph: a case turned on its side so the chronograph pushers point upward at 12 o'clock, like a pair of horns. Citizen's original Tsuno Chrono — "tsuno" literally means horn in Japanese — launched in the early 1970s at the height of motorsport's golden age, built for drivers who needed to read a stopwatch at a glance from behind the wheel.
The Citizen Promaster Tsuno Chrono Racer AV0104-06W is a 44.5mm stainless steel bullhead chronograph with a green dial, gold-tone bezel and accents, brown leather strap, and the hand-assembled Caliber E210 Eco-Drive movement — solar-powered, with no battery to replace. It's water resistant to 200m and limited to 5,000 unnumbered pieces worldwide. Price: $1,350 USD. Available at Lexor Miami, authorized Citizen dealer.
Citizen releases the original Tsuno Chrono, a bullhead-cased chronograph designed so drivers could trigger the stopwatch pushers without taking their hands off the wheel — an era defined by motorsport's growing obsession with precision timing.
Alongside other legendary bullhead chronographs of the decade, the Tsuno becomes a cult favorite among collectors for its sculptural, function-driven case shape — unlike anything else on the wrist.
Citizen revives the Tsuno Chrono Racer as a limited edition, keeping the vintage silhouette intact while upgrading the engine inside: Eco-Drive technology that never needs a battery.
The AV0104-06W pairs its signature bullhead case in white-silver stainless steel with a two-tone gold bezel, echoing the gauges and trim of classic racing dashboards. The green dial — a nod to British racing green — contrasts sharply with the gold-tone hands, indexes and chronograph subdials, keeping legibility high at a glance, exactly as the original Tsuno demanded from drivers decades ago.
A brown leather strap with a gold-toned buckle finishes the look with vintage motoring warmth, while a sapphire crystal keeps the dial scratch-resistant for daily wear on or off the track.
Inside the case is Citizen's Caliber E210 Eco-Drive — a hand-assembled chronograph movement that converts light from any source, sunlight or artificial, into the energy that powers the watch. There's no battery to replace and no winding required; as long as it sees light occasionally, it keeps running. The movement delivers a 1/5-second chronograph with flyback function, 12-hour timing capability, an alarm, a power reserve indicator, and a date display — a genuinely functional tool watch wrapped in a design classic.
| Reference | AV0104-06W |
|---|---|
| Collection | Citizen Promaster Tsuno Chrono Racer |
| Case Material | Stainless steel, white-silver tone, bullhead profile |
| Case Diameter | 44.5mm |
| Bezel | Gold-tone |
| Dial | Green with gold-tone accents |
| Crystal | Sapphire, scratch-resistant |
| Movement | Caliber E210 Eco-Drive, hand-assembled, light-powered |
| Functions | 1/5-second flyback chronograph, 12-hour timer, alarm, power reserve indicator, date |
| Water Resistance | 200m (200m / 660ft) |
| Strap | Brown leather, gold-toned buckle |
| Weight | Approx. 133g |
| Edition | Limited to 5,000 unnumbered pieces worldwide |
| Price | $1,350.00 USD |
Clean the stainless steel case with a soft, slightly damp cloth, and keep the leather strap away from prolonged water exposure to preserve its finish. Since it runs on Eco-Drive, simply let the watch see natural or artificial light regularly — no winding, no battery changes, just occasional light exposure to keep the movement fully charged.
The Citizen Promaster Tsuno Chrono Racer AV0104-06W takes a genuine 1970s design icon and makes it practical for everyday wear — no battery anxiety, no fragile vintage movement, just the shape that made the original famous. Lexor Miami has it in stock now, ready for collectors who want motorsport history on the wrist.
Tsuno means "horn" in Japanese, referring to the two chronograph pushers that sit atop the case at 12 o'clock, resembling a pair of horns on the watch's bullhead silhouette.
Yes. It runs on Citizen's Caliber E210 Eco-Drive movement, which converts light from any source into energy, eliminating the need for battery replacements.
This is a limited edition of 5,000 unnumbered pieces worldwide.
Yes, it's water resistant to 200 meters, suitable for swimming and recreational diving.
The AV0104-06W is priced at $1,350.00 USD at Lexor Miami, an authorized Citizen dealer.
Lexor Miami carries the Citizen Promaster Tsuno Chrono Racer in-store and online, backed by manufacturer warranty and over 20 years of authorized-dealer experience.
2371 NW 20th St, Miami, FL 33142
