38mm ST1901 Pulsograph LA2201B - - - - Lucius Atelier - Swiss Quality Seiko Watch Mod Parts

38mm ST1901 Pulsograph LA2201B

Name: 38mm ST1901 Pulsograph LA2201B
Brand: Lucius Atelier
SKU: LA2201B
Price: 599.0 SGD
Availability: InStock

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$599 SGD

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LIMITED & EXCLUSIVE · 100 pieces only. Once this run sells out, it is retired for good — never remade.

The ST1901 Pulsograph. 38mm. One of 100.

A doctor's watch — you don't see many. Clear, legible black pulsometer scales on an enamel-white dial that reads like porcelain, with mirror-finished hour markers and a polished bezel. Limited and exclusive to 100 pieces.

Inside is the hand-wound ST1901 — a mechanical chronograph caliber in production since the 1960s. Officially rated -10 to +40 seconds a day; across 30 pieces we tested dial-up, ours ran between -1 and +8 (not every piece will match that, but it tells you how this batch was built). Sapphire caseback, so the caliber is part of the show.

The doctor's watch.
Start the chrono, count the beats, read the rate.

Hand-wound ST1901.
A chronograph workhorse in production since the 1960s — wound by hand, running on show.

Pulsometer dial.
Black pulsometer scales on enamel white — start the chronograph, count beats, read the pulse.

Porcelain look.
An enamel-white dial with mirror-finished markers — easily mistaken for porcelain.

Sapphire both sides.
Double-domed sapphire up front, clear sapphire caseback behind the caliber.

Heads up — wearing it

Hand-wound: wind it to run it. Officially rated -10/+40 s/day; our 30-piece dial-up test ran -1 to +8. Quick-release leather strap, butterfly clasp, 100m water resistance.

Specs
What's Included
The Movement

Specs
1. Model LA2201B
2. Movement ST1901 (Hand Wind Chronograph)
3. Case Material 316L Stainless Steel
4. Case Diameter 38mm
5. Case Thickness 13.3mm (12.3mm excluding dome sapphire)
6. Lug Width 20mm
7. Lug To Lug 46mm
8. Crystal Double Domed Sapphire With Clear Anti-Reflective Coating
9. Caseback Clear Sapphire
10. Strap Quick Release Genuine Leather
11. Clasp Butterfly
12. Water Resistant 10 bar / 100m
1. 1x 38mm ST1901 Pulsograph LA2201B
2. 1x Quick Release Genuine Leather Strap
The ST1901 is a hand-winding mechanical chronograph caliber made from the 1960s to this very day — one of the oldest and most reliable workhorse chronograph movements in existence. Official accuracy is rated -10 to +40 seconds per day; across 30 pieces we tested dial-up, ours ran between -1 and +8 seconds per day. Not every piece will match that, but it tells you how this batch was built.

Movement Specs
1. Movement Model ST1901
2. Movement Type Mechanical Chronograph - Manual / Hand Wind
3. Movement Diameter 31.3mm
4. Movement Thickness 6.25mm
5. Functions hours, minutes, seconds, date, stopwatch
6. Shock Protection Yes - Incabloc system
7. Frequency 3 Hz (21.600 vph)
8. Daily Rate -10 to +40 s/day
9. Power Reserve 50 Hours (Chronograph OFF), 45 Hours (Chronograph ON)

What is the ST1901 movement?

A hand-winding mechanical chronograph caliber in production since the 1960s — one of the oldest and most reliable workhorse chronograph movements in existence. Official accuracy is rated -10 to +40 seconds per day; across 30 pieces we tested dial-up, ours ran between -1 and +8 seconds per day (not every piece will match that, but it shows how the batch was built).

Is the ST1901 chronograph a limited edition?

Yes — each ST1901 model is limited and exclusive to 100 pieces. The LA2201A speedmaster-style chronograph and the LA2201B pulsograph are 100 pieces each.

What is a pulsograph watch?

A pulsograph — also called a doctor's watch — carries a pulsometer scale on the dial. Start the chronograph, count the marked number of heartbeats, and the seconds hand points to the pulse rate per minute. Ours pairs the scale with an enamel-white dial and the hand-wound ST1901 chronograph caliber.