The ProPilot X Calibre 115 Gonzo Edition is easy to file under colour and collaboration. Its more useful role is as a test of Oris’s ten-day hand-wound architecture. As the mainspring is wound, the Gonzo face printed on the barrel becomes visible beneath the open dial. That joke only works because Calibre 115 already makes stored energy part of the display.
Why a collector should care
A 240-hour reserve changes the relationship between owner and crown. The watch can be wound as a weekly ritual rather than as daily maintenance, while the non-linear indicator shows that long reserve being consumed. The collector question is whether this slower cadence creates attachment, or simply adds a large case and a busier dial to the routine.
Ten days changes the winding contract
Calibre 115 is manually wound and runs at 3 Hz. Its ten-day autonomy does not make winding irrelevant; it makes the act deliberate. A regular weekly wind can become part of ownership, while the stop-seconds function gives a precise reset when the watch has stopped. Buyers should still test the crown action themselves: no specification can establish how satisfying repeated winding will feel.
The reserve is instrument and theatre
The power-reserve hand at three o’clock moves across a non-linear scale, giving more room where the remaining energy becomes most useful to read. At roughly eleven o’clock, the visible mainspring turns stored power into a physical object. On the Gonzo Edition, the emerging face adds humour, but the underlying lesson is serious: this movement communicates its state without hiding behind a closed dial.
Skeletonization asks for active reading
Open architecture makes the barrel, gear train and bridges available to the eye, but it also competes with the hands. The gradient colours and chilli-red reserve hand push the Gonzo model further toward spectacle. That is a strength for a collector who wants the mechanism to remain visually active; it is a trade-off for anyone who expects instant legibility in every light.
A 44 mm commitment
The multipiece titanium case measures 44 mm and is rated to 10 bar, with a 22 mm interhorn width. Titanium limits mass, but it does not erase scale. The broad case and open dial are the stage the movement requires. Diameter, crown access and bracelet articulation should therefore be tested together rather than inferred from material alone.
What to test before buying
Wind the watch through a meaningful portion of the reserve, read the indicator at several angles, check the small seconds at 7:30 and decide whether the colour story remains enjoyable after the first impression. Then compare it with a quieter Calibre 115 execution. The Gonzo Edition succeeds when its humour strengthens the weekly ritual; if the character eclipses the mechanism, the same calibre in a calmer case may be the better long-term companion.
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