# What is the most accurate mechanical watch available? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

What is the most accurate mechanical watch available?

## Products

### Rolex Oyster Perpetual Datejust 41, reference 126334
```yaml
product: rolex-oyster-perpetual-datejust-41-reference-126334
brand: Rolex
price_gbp: 8617.0
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
diameter: 41 mm
case_material: White Rolesor, combination of Oystersteel and white gold
movement_type: Perpetual, mechanical, self-winding
power_reserve: Approximately 70 hours
water_resistance: 100 metres
```

- **Price:** £8617.0 [^1]
- **Summary:** The Rolex Datejust 41 reference 126334 combines a 41 mm Oyster case in White Rolesor with a fluted white-gold bezel, sapphire crystal, date display and a Superlative Chronometer-certified calibre 3235. It suits wearers seeking a versatile luxury mechanical watch with strong water resistance, a long power reserve and a classic date-focused design.
- **Ideal For:** It suits the search for the most accurate mechanical watch because its calibre 3235 is a Superlative Chronometer certified to Rolex's -2/+2 seconds per day standard after casing, while its paramagnetic blue Parachrom hairspring supports stable timekeeping.
- **Additional Sources:** [^2], [^3]

---
## References & Sources
[^1]: Rolex, accessed 2026-09-13. https://www.rolex.com/en-us/watches/datejust/m126334-0001
[^2]: XELOR Watches, accessed 2026-09-13. https://xelorwatches.com/en/product/rolex-datejust-41-blue-dial-126334-jubilee-new/
[^3]: The Watch Source, accessed 2026-09-13. https://www.thewatchsource.co.uk/Rolex/126334+White+Roman+Oyster.html