DROP

Zenith Fits the El Primero's 5Hz Movement Into a Three-Hand Chronomaster Solo Sport

Four 40mm steel references debut at Geneva Watch Days 2026 with the high-beat El Primero 3620, a new clasp, and prices from CHF 8,900.

Image: Zenith

The El Primero name has long been tied to Zenith’s chronographs. The Chronomaster Solo Sport breaks that mold. Zenith’s brand page calls the Solo Sport “a new chapter for ZENITH,” one that takes “the iconic El Primero” into what the house describes as a three-hand form. The collection was unveiled at Geneva Watch Days 2026, on September 2.

The details are straightforward. The four 40mm stainless steel references share a ceramic rotating bezel and a ceramic dial: sunray white with date (03.5000.3620/69), polished black with date (03.5000.3620/22), polished brown with date (03.5001.3620/72), and a no-date polished black variant (03.5000.3620/21). The movement is the El Primero 3620, a 5Hz high-frequency manufacture caliber running at 36,000 vibrations per hour, with roughly 60 hours of power reserve. All four are rated to 200 metres (20 ATM), per Monochrome and Haute Time.

Zenith’s product page names the caliber plainly, El Primero 3620, the same number that sits inside each reference code. The brand does not claim this is the first time-only El Primero, so neither will we. The brand page itself does not list a price, but the launch coverage does: CHF 9,900 (USD 10,900) for the three date models and CHF 8,900 (USD 9,800) for the no-date, per Monochrome and Haute Time, with availability from September 2026 as part of the permanent collection.

That produces an odd balance of detail on the brand’s side. The clasp, ZENCLASP, gets a paragraph of its own: Zenith calls it “the result of three years of development,” with tool-free micro-adjustment. The caliber that justifies the whole exercise gets a name, a frequency and a number of hours.

Collectors will weigh the rest, particularly that CHF 9,900 against a Chronomaster Sport chronograph with the same high-beat pedigree and the complication the name was built on.

Source: zenith-watches.com, zenith-watches.com (product page), Monochrome, Haute Time

And at Spot.Watch — that’s always worth noticing.

LOOK BACK

Christopher Ward's Bronze Trident Biscay Costs $2,095, a $225 Premium Over Steel on the Same Strap

The 39mm case uses marine-grade aluminium bronze, not tin alloy, and lands $225 above the steel Biscay Automatic on the same tan leather strap.

Image: Christopher Ward

Christopher Ward added a bronze version to the Trident Biscay lineup when the collection launched on September 1, 2026, per Worn & Wound. The product page for reference C60-39C3H1-B0KK0-VT1 confirms what collectors want to know: the case is solid bronze, not a steel core with a bronze bezel. The 39mm case, 11mm thick, is made from CuAl10Ni5Fe4, a marine-grade aluminium bronze (roughly 10% aluminium, with nickel and iron). This differs from CuSn6, the tin bronze used in most divers at this price. Christopher Ward leans into the maritime connection: “Bronze has weathered storms for centuries, from ships’ bells to propellers, taking on the sea’s abuse and wearing it well.”

The key difference lies in patina. Aluminium bronze darkens more slowly and evenly than tin bronze, appealing to some, disappointing to others, depending on how quickly you want a vintage look.

The configuration on the page runs a brown textured dial with oversize applied Arabic numerals at the quarters, rose-gold-plated hands and a tan leather strap on quick-release fittings, with two hybrid rubber alternatives listed. The bezel is anodised aluminium with a 120-click action. Inside is a COSC-certified Sellita SW300-1 with a 56-hour reserve, and the case is rated to 200 metres.

The page gives a jewel count (25) and a lug-to-lug measurement (46.3mm) but no launch date of its own and no certification standard for the alloy beyond its name. The watch is simply shown in stock; the September 1 launch date comes from Worn & Wound’s collection report.

Price is $2,095 on the tan leather strap. The steel Biscay Automatic on the same strap, reference C60-39C3H1-S0KK0-VT1, lists at $1,870, so the bronze case carries a $225 premium. A bronze tax, then, but a modest one for a solid case in an alloy few rivals use.

Source: christopherward.com, christopherward.com (steel), Worn & Wound

And at Spot.Watch — that’s always worth noticing.

DROP

Citizen Celebrates 50 Years of Eco-Drive With Two Limited Promaster Watches

Two new Promaster watches honor Eco-Drive's 50th anniversary, along with a few unanswered questions.

Image: Citizen

On 1 September 2026, Citizen announced two limited Promaster watches to mark the 50th anniversary of Eco-Drive. Citizen’s framing is deliberate: the brand launched what it calls the “world’s first light-powered analogue watch” in 1976, though the Eco-Drive name came later. The anniversary is of that 1976 watch, not of the name.

The two watches are the Skyhawk (from the Sky series) and the Tsuno Chrono (from the Land series).

The Skyhawk (ref. JY8144-50E) leans maximalist: 45.7 mm of steel with black and light-gold plating, powered by Cal. U680. The radio-controlled Eco-Drive movement holds ±15 seconds per month when out of signal range. Citizen claims 3.5 years of runtime from a full charge in power-save mode. World time, perpetual calendar, power reserve indicator, a 1/100-second chronograph to 24 hours, slide rule. Limited to 5,200 pieces worldwide.

The Tsuno Chrono (ref. AV0104-06W) is the better movement story. Citizen credits Cal. E210 with “a mechanism that instantly returns the chronograph hands to zero, a feature often seen in mechanical chronograph watches, in an Eco-Drive quartz model.” That behaviour is rare in a light-powered chronograph. It runs 8 months on a full charge, times to 12 hours in fifths, and is capped at 5,000 pieces worldwide.

Both use recycled materials in their dial components and are rated to 20 bar.

The gaps are worth stating. Citizen’s prices, USD 1,000 and USD 1,340, are labelled projected. Launch is September 2026 with no day given. Availability is only “Worldwide.” And the page offers no calibre lineage at all: nothing connecting these to any earlier Skyhawk or horned Promaster chronograph. If that history matters to you, Citizen has not put it here.

Source: Citizen

Why this watch, on this wrist?

DROP

Seiko Lets Fans Choose the Prospex 1965 Heritage Diver's Dial, and Daytime Blue Wins

The HBC011 arrives in October 2026 for $1,400, limited to 4,500 pieces, with a dial color chosen by Seiko fans.

Image: Seiko

On August 26, Seiko revealed the dial of its newest Prospex 1965 Heritage diver was chosen by public vote, not a design committee. The campaign ran online and in-store from July 1 to 31, 2025, marking 60 years since the 1965 diver collectors call the 62MAS, according to Seiko’s release. Four dial options depicted seascapes at different hours: sunrise, daytime, late afternoon, and sunset. Daytime Blue won, yielding reference HBC011, which is detailed on Seiko’s dedicated Prospex page.

Seiko’s press release calls the watch a design “reflecting the ever-shifting colors of the sea,” which is marketing speak, but the specs tell the real story. They are worth noting: complete and collector friendly. Caliber 6R55 with roughly 72 hours of reserve, a 300m diver’s rating, 40.0mm across and 13.0mm thick, and a case back numbered out of 4,500. US price is $1,400, available from October 2026 at select Seiko retailers, and Seiko attaches its usual note that specifications and price are current as of publication and subject to change.

What the release does not publish is the part collectors will argue over. No vote totals, no participant count, no named platform, and the three losing dials are identified only by time of day, never by name. The wave motif on dial and bezel is traced back through two 60th-anniversary editions to the case back of Seiko’s 1975 titanium saturation diver, a lineage that holds up. Whether the vote shaped the watch or the watch acquired a story is, on this evidence, unresolved.

Source: Seiko

Why this watch, on this wrist?