Zelos · Microbrand · Singapore

Zelos Hammerhead 1000m Diver Bronze

Discontinued · 2016 · Diver

From $349 to $849
  • Seiko NH35A
  • 44 mm × 17 mm
  • Sapphire crystal
  • 1000 m water resistance

Movement

Type
Automatic
Tier
Entry
Complications
Date
Frequency
21,600 bph
Power reserve
41 h
Hacking
Yes
Accuracy (factory)
-20 / +40 s/day

Case

Diameter
44 mm
Lug to lug
49 mm
Thickness
17 mm
Lug width
22 mm
Material
Bronze (CuSn8)
Hardening
—
Water resistance
1000 m
Crown
Screw-down
Case back
Solid
Bezel
Unidirectional, 120 clicks, 60-minute dive, lumed
Finishing
Polished upper case, brushed lower case

Crystal & dial

Crystal
Sapphire
Shape
Double-domed
Anti-reflective
Inner
Lume
Super-LumiNova C3 (hands, indices, bezel, crown) and BGW9 (minute track)

Bracelet

Bracelet
Not offered

Straps

Strap 1
Rubber, Rubber strap with custom bronze buckle. The 2016-2017 batches also included canvas and leather straps; the 2018 batch came on the rubber strap only.

Weight

Head only
—
On bracelet
—
On strap
—

Prices

VariantConfigurationTypePriceUSDAs ofSource
Black Ceramic—Msrp499 USD$4992026-10-21link
Black Stealth Ceramic—Msrp649 USD$6492026-10-21link
Blue—Msrp349 USD$3492026-10-21link
Blue Ceramic—Msrp649 USD$6492026-10-21link
Blue Meteorite—Msrp849 USD$8492026-10-21link
Brown Meteorite—Msrp699 USD$6992026-10-21link
Grey—Msrp649 USD$6492026-10-21link
Meteorite—Msrp699 USD$6992026-10-21link
Meteorite Ceramic—Msrp849 USD$8492026-10-21link
Olive Green—Msrp499 USD$4992026-10-21link
Submarine Limited Edition—Msrp699 USD$6992026-10-21link

Variants

NameDialBezelStatus
Black CeramicblackBlack ceramic insert, fully lumed, with a green-glowing 'patina' outer rehaut ring—
Black Stealth CeramicblackBlack ceramic insert with stealth lume (only the triangle lumed)—
Blueblue (sunburst)Full bronze bezel—
Blue Ceramicblue (full BGW9 lume)Blue ceramic insert—
Blue Meteoritedark blue (meteorite with blue PVD coating)Full bronze bezel (from the photo)—
Brown Meteoritebrown (meteorite)Full bronze bezel—
Greygrey, full C3 "vintage" lume, black hands and indicesFull bronze bezel (from the photo)—
Meteoritegrey (meteorite)Full bronze bezel—
Meteorite Ceramicgrey (meteorite)Black ceramic insert with stealth lume (only the triangle lumed)—
Olive Greenolive greenFull bronze bezel—
Submarine Limited Editiongrey (steel cut from a nuclear submarine hull)Full bronze bezel (from the photo); submarine engraving on the case sideLimited (100)

About this entry

87% of key specs known. Missing: weight, hardening.

The original Hammerhead, Zelos's 1970s-style cushion-case 1000m diver, taken as pre-orders on zeloswatches.com from July 2016 and delivered from early 2017; later batches followed in 2017 and 2018, and every listing is now in Zelos's Discontinued Models collection. It was replaced by the Hammerhead 2 (November 2019). This file is the CuSn8 bronze case; the 316L steel case (Hammerhead 1000m Diver Steel), the titanium case (Hammerhead Titanium 1000m) and the Ti-Damascus case are separate models. Case 44mm, 49mm lug to lug, 17mm high including the double-domed sapphire (14.5mm without it), 22mm lugs, 1000m. Seiko NH35 with a date at 6 (photos; aBlogtoWatch on the titanium version of the same case). Screw-down, C3-lumed signed crown at 4 o'clock. Solid steel caseback etched with two hammerhead sharks (aBlogtoWatch: "solid steel case-back on all eight Zelos Hammerhead models"). 120-click unidirectional bezel with either a full bronze bezel or a ceramic insert (Zelos: "1500 Vickers"), recorded per variant from Zelos's colourway text and the photos; the 60-minute scale is read from the photos. Two-layer dial with a BGW9 minute track and C3 on hands, indices, bezel and crown; aBlogtoWatch found the index lume weaker than the bezel's. Inner AR coating per Zelos; aBlogtoWatch found the reflections noticeable. Sold on a rubber strap with a bronze buckle; the bracelet was for the steel models only. The Submarine Limited Edition (February 2018, 100 numbered pieces) has a dial cut from the hull steel of a decommissioned US nuclear attack submarine, a submarine engraving on the case side, an "Emergency Blow" caseback and a changed depth line on the dial; a titanium version (80 pieces) belongs to the Hammerhead Titanium 1000m. Prices span batches: the 2017 listings ($649 to $849, "Models available: Bronze" option) and the July 2018 batch ($349 to $699, rubber strap only, "to offer a lower price than before"). At launch aBlogtoWatch quoted $529 for black, blue or grey bronze models and $749 for the bronze meteorite. Weight not published.

Last verified: 2026-10-21. Edit or correct this entry.

Sources