If you have been comparing first copy watches and keep running into the code "calibre 333116", here is the short answer: it is a movement designation used for a family of automatic mechanical calibres fitted to mid-range builds. The code describes the engine inside the watch rather than the watch itself, so two pieces listed under the same number can still differ in case size, dial and finishing. This guide covers what the number usually means, what to look for on a spec sheet, and how to keep the movement running well.
Key Features
- Automatic self-winding mechanical movement with an oscillating rotor
- Date display at 3 o'clock on most builds
- Roughly 38 to 42 hours of power reserve when fully wound
- 25 to 27 jewels, depending on the production batch
- Beat rate of 21,600 or 28,800 vibrations per hour
- Central sweep seconds hand, with hacking on later batches
- Fits stainless steel cases in the 38 mm to 42 mm range
- Takes standard 20 mm or 21 mm straps on most references
Materials and Specifications
The movement is normally housed in a 316L stainless steel case with a polished, brushed or two-tone finish. Crystals are mineral glass on entry-level versions and sapphire on higher tiers, and case backs are either solid or display style. Dials are brass or alloy with applied indices and luminous fill. Water resistance is usually listed as 3 to 5 ATM, which handles splashes and rain but not swimming. Strap options run from steel bracelets to leather and rubber, and most references accept standard spring bars.
Shipping and Returns
Orders are typically dispatched within one to two business days with tracking provided once the parcel leaves the warehouse. Packaging is discreet and the watch arrives in a protective box. If the piece is not right for you, returns are accepted within the stated window provided it is unworn, with tags and packaging intact. Check the returns page for the exact timeframe and the steps for arranging a return.
Is calibre 333116 a genuine Swiss movement?
The code is a factory reference rather than a Swiss maker's designation, so treat "Swiss made" wording in a replica listing as marketing unless the seller names the actual manufacturer. Genuine Swiss automatic calibres are catalogued under names such as ETA or Sellita.
How accurate is a watch with calibre 333116?
Most examples run within roughly -20 to +30 seconds per day out of the box, which is normal for this class of movement. A watch that has been regulated by the seller will usually sit closer to +/-10 seconds.
How should I care for it?
Have it serviced every three to five years, avoid setting the date between about 9 pm and 3 am, and keep it away from strong magnets such as speakers and phone cases. Wind it gently by hand if it has been sitting still for a few days.