No. 21Calibre GW-21Assembled in Bengaluru

Wound in India.
Worn for life.

Automatic, field and dress watches, put together by hand at our bench in Jayanagar. Pick a dial, pick a strap, and watch it keep time.

Set to Bengaluru: --:--:-- IST

Model
Dial
Strap

Your build

Kaveri Automatic 39

Monsoon blue · Leather

₹34,900

[01]

The catalogue

Three families, one calibre. Every watch is regulated in six positions before it leaves the bench. The leather strap and the NATO cost the same; the steel bracelet adds ₹4,500.

[02]

Inside GW-21.

  1. Closed upWhat you see on the wrist: dial, hands and a 39 mm steel case.
  2. Taken apartSeven layers, 128 parts. Scroll and the movement lifts apart so you can see each one.
  3. The heartThe balance wheel swings back and forth four times a second. The gear train turns those swings into seconds.
  4. Back togetherEvery layer is fitted by one watchmaker, who signs the case back.
Jewels
24
Beat
28,800 vph
Reserve
42 h
  1. HandsSweeping seconds
  2. DialPrinted in Mumbai
  3. Case316L steel, 39 mm
  4. Gear trainOn a perlage mainplate
  5. Balance wheel4 swings a second
  6. BridgesRuby jewels, blued screws
  7. RotorWinds as you move

[03]

Give it a wind.

An automatic winds itself as you move. Left on a table, it keeps running for 42 hours. Turn the crown to fill the mainspring.

12hours of power

Running. It would stop around --:-- IST.

  • Drag the crown up or down, or focus it and press the arrow keys.
  • Full in about 40 turns. A slipping bridle stops you over-winding.
  • Hacking seconds: pull the crown and the second hand stops, so you can set it to the second.

[04]

The Jayanagar bench.

Mainspring Watch Co began in 2019 when two engineers left an aerospace plant in Peenya to learn watchmaking. Today six watchmakers assemble, regulate and test every watch on one long bench in Jayanagar, Bengaluru. The movement and sapphire are imported; the case, dial and strap are made in India, and we tell you which part comes from where.

6
watchmakers at the bench
128
parts in every movement
2019
first watch assembled
  1. Case316L steel, machined in Coimbatore
  2. DialLacquered and printed in Mumbai
  3. StrapVegetable-tanned leather from Kanpur
  4. MovementSwiss-made base, regulated by us in Bengaluru
Concept by Brand Evolution