Octopus Kraken OCT-0013 – Vintage 36mm Automatic Watch, PT5000 or SW200, Sapphire, 100M

Octopus Kraken OCT-0013 – Vintage 36mm Automatic Watch, PT5000 or SW200, Sapphire, 100M

The Octopus Kraken OCT-0013 is a compact 36mm vintage-style tool watch with a brushed 316L stainless steel case and bracelet, available with a choice of automatic movement — the PT5000 (a Chinese-manufactured clone of the ETA 2824-2) or the genuine Swiss Sellita SW200. Sapphire crystal with anti-reflective coating. Swiss BGW9 luminous coating. Screw-down crown. 100M water resistance. Solid 316L stainless steel bracelet with fly-adjustable milled clasp. Available in Enamel Black and Enamel Blue dial variants.

Key Specifications

PT5000 vs Sellita SW200 — Choosing Your Movement

This watch is available with two different automatic movement options, and the distinction matters:

PT5000 — manufactured in China by HK Precision Technology, the PT5000 is a well-regarded clone of the Swiss ETA 2824-2 design. 25 jewels, 28,800 vph, approximately 38-hour power reserve, typical accuracy of -10/+30 seconds per day. It includes hacking (seconds stop for precise time setting) and hand-winding. The PT5000 has earned a strong reputation among microbrand watch enthusiasts as an accurate, reliable, lower-cost alternative to genuine Swiss movements — but it is not itself a Swiss movement.

Sellita SW200 — a genuine Swiss-made automatic movement from Sellita Watch Co., founded in 1950 and used across established Swiss brands including Oris, Tag Heuer, and Baume & Mercier. 26 jewels, 28,800 vph, 38–41-hour power reserve, with hacking and hand-winding. Standard-grade accuracy is typically within ±12 seconds per day, with higher chronometer-grade variants reaching ±4 seconds per day. The SW200 commands a price premium over the PT5000 reflecting its genuine Swiss manufacture and tighter accuracy tolerance.

Both movements share the same physical dimensions and functional layout (hours, minutes, sweeping seconds, hacking, hand-winding) — the choice comes down to budget versus the premium of genuine Swiss manufacture and improved accuracy.

Vintage Tool Watch Design

The OCT-0013 dial uses a clean, legible layout with bold Arabic numerals at 3, 6, and 9 o’clock — a classic tool watch reference point that prioritises at-a-glance readability. The brushed case finish combined with polished bezel edges gives the watch a refined-but-rugged character, while the compact 36mm diameter and 43.5mm lug-to-lug measurement keep it comfortable on smaller to average wrists, distinct from the larger 42mm+ cases common in modern sport watches.

Sapphire Crystal with Anti-Reflective Coating

Genuine sapphire crystal, Mohs 9 hardness, with anti-reflective coating applied to improve dial visibility and reduce glare under direct light — a feature often reserved for higher-tier watches.

Swiss BGW9 Lume

BGW9 is a specific, widely respected luminous pigment in the watch industry, known for a crisp blue glow and strong post-charge visibility duration in darkness — a genuine quality marker over generic luminous paint.

Screw-Down Crown and 100M Water Resistance

The screw-down crown seals against the case when fully wound in, providing a secure barrier against water ingress beyond what a standard push-pull crown offers. Combined with the 100M / 10ATM rating, the watch is suitable for swimming and snorkelling. 100M is generally considered the entry threshold for water-sport suitability, though it is not equivalent to a dedicated ISO 6425-certified dive watch rating — treat it as a robust everyday and water-sport watch rather than a technical dive instrument.

Solid Stainless Steel Bracelet

316L stainless steel bracelet with a fly-adjustable milled clasp — allowing on-the-go length adjustments without tools, useful for accommodating wrist size changes through the day (such as temperature or activity-related swelling). Total weight is approximately 125g.

Dial Variants

Enamel Black — deep black enamel dial finish, the more versatile and formal of the two options.

Enamel Blue — rich blue enamel finish, offering a distinctive colour while retaining the same legible Arabic numeral layout.

Related Watches

For a similar retro case with an engine-turned bezel, see the Octopus Kraken OCT-0016 — also available with PT5000 or SW200 movement options and Swiss BGW9 lume. For military-inspired field watches, see the CORGEUT 42mm Field Watch (Miyota or NH35A). For compact diver-style options, see the CORGEUT 36mm/39mm NH35 Automatic Watch.

FAQ

What is the difference between the PT5000 and SW200 versions? The PT5000 is a Chinese-manufactured clone of the ETA 2824-2 — reliable and accurate (typically -10/+30 sec/day) at a lower price. The SW200 is a genuine Swiss-made Sellita movement with tighter standard accuracy (typically ±12 sec/day) and the credibility of established Swiss manufacture, at a higher price. Both share the same case, dial, and functional layout — the difference is purely in the movement.

Can I swim with this watch? Yes — 100M / 10ATM water resistance supports swimming and snorkelling. It is not a certified dedicated dive watch; avoid deep or technical diving unless the watch carries a specific dive certification.

Does it need a battery? No — both the PT5000 and SW200 are automatic mechanical movements that wind via wrist motion, with hand-winding also available via the crown.

How bright is the lume? Swiss BGW9 Super Luminous coating produces a crisp blue glow with strong visibility for several hours after light exposure — a quality lume pigment used across the watch industry.

Does it come with a warranty? Yes — a 2-year manufacturer’s warranty is included.

What size wrist does this suit? At 36mm diameter and 43.5mm lug-to-lug, the OCT-0013 suits smaller to average wrist sizes particularly well, in keeping with its vintage tool watch sizing.