The Oris Big Crown ProPilot X Calibre 115 is a 44 mm titanium, hand-wound mechanical watch with an open-worked dial and a manufacturer-stated 10-day power reserve. Despite that unusually long reserve, it is not automatic: the wearer winds it by hand. Oris unveiled the model on September 5, 2019; current price and included strap or bracelet depend on the regional listing and exact reference.
What is the Oris Big Crown ProPilot X Calibre 115?
It is a large, contemporary pilot-style watch built around Oris Calibre 115, a skeletonised, hand-wound movement developed by Oris. The open dial exposes much of the movement rather than placing a conventional solid dial over it. Central hour and minute hands provide the primary time display, with subsidiary seconds at 7:30 and a power-reserve indicator at 3.
The Federation of the Swiss Watch Industry reported the watch’s unveiling on September 5, 2019, describing a brushed titanium case and the ten-day movement. Federation of the Swiss Watch Industry, September 5, 2019.
How long is the power reserve, and is it automatic?
Oris specifies a 240-hour, or 10-day, power reserve for Calibre 115. That is the manufacturer’s specification, not an independent laboratory measurement. The movement is hand-wound, so the reserve means more time between winding sessions—not that the watch winds itself while worn.
#1 Best Overall
- Model 01 115 7759 7153-Set7 22 01TLC
Oris describes the indicator as non-linear: its scale is designed to show the remaining power with greater accuracy as the time to rewind approaches. The indicator sits at 3 o’clock. The movement runs at 21,600 A/h, or 3 Hz, and includes stop seconds, which halt the seconds hand when setting the time. See Oris’s product specifications and Calibre 115 movement page.
Case, dial and other specifications
| Specification | Published detail |
|---|---|
| Reference | 01 115 7759 7153-Set7 22 01TLC on the cited Oris regional product page |
| Case | Multi-piece titanium; 44.00 mm |
| Crystal and caseback | Sapphire crystal, domed on both sides with double-sided anti-reflective coating; screwed titanium see-through caseback |
| Water resistance | 10 bar on Oris’s current listing; the 2019 launch report expressed the rating as 100 m |
| Movement | Oris Calibre 115; hand-wound, in-house developed and skeletonised; 34 mm, 15 lignes |
| Display | Central hours and minutes; subsidiary seconds at 7:30; non-linear power-reserve indicator at 3 |
| Frequency | 21,600 A/h / 3 Hz |
| Power reserve | 240 hours / 10 days, as specified by Oris |
| Dial and supplied strap or bracelet | Grey dial and titanium bracelet on the cited Set7 listing; other configurations are shown by Oris, including a black leather-strap variant |
| Interhorn width | 22 mm |
The 10-bar rating is the published water-resistance specification, not a guarantee that the watch is suitable for every water activity. The 22 mm interhorn measurement identifies the width at the lugs; it does not by itself establish that a particular third-party strap’s end shape will fit the case. Oris lists the details on its regional product page.
Rank #2
- High quality titanium case - 39mm diameter, satin and frosted finish, with screw-down crown and sapphire crystal clear back for durability and comfort
- Innovative manufactory movement: Oris Calibre 400 automatic with up to 120 hours power reserve, second stop and high antimagnetics for precise time keeping
- Stylish dial: smoky blue design with applied indices and super LumiNova coated hands for optimal readability day and night
- Robust titanium strap: with folding clasp and Oris lift system, strap change via spring bars possible for versatile wearing options
- Suitable for everyday use: water resistant to 10 bar (100 metres), ideal for daily use with functions such as hours, minutes, seconds and date
What does it cost, and what should you check?
The cited Oris regional listing displayed CHF 8,000 for reference 01 115 7759 7153-Set7 22 01TLC when checked in 2026. That is a regional listing price, not a global MSRP or a guaranteed transaction price; prices, stock and configurations can differ by market. The 2019 launch coverage reported launch-era prices, which are historical rather than current pricing. Oris regional listing; Oracle Time launch report.
The cited Oris page states a two-year warranty and says free registration with MyOris extends it to five years. Check the terms applying to the relevant market and purchase before relying on that coverage; warranty conditions can change. When comparing offers, verify the full reference, bracelet or strap included, seller, condition, local price and applicable warranty rather than treating every ProPilot X Calibre 115 listing as the same package.
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Oris’s official product page explains: “The Oris Big Crown ProPilot X Calibre 115 is powered by a skeletonised, in-house developed calibre with a 10-day power reserve and an Oris-patented non-linear power reserve indicator that shows the power remaining with greater accuracy as the time to rewind the watch approaches.”
Quick Recap
Rank #4
- Power Reserve indicator sub-dial at the 3 o'clock position.
- Displays the date at the 9 o'clock position.
- Oris in-house manufactured Caliber 111, beats at 21,600 vph, contains 40 Jewels & has an impressive 10 day (240 hour) power reserve.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
