Inside Caviar's iPhone 17 Pro with Built-in Geiger Counter

Picture this: you glance at your messages and, below the time, a tiny meter quietly reports the background radiation. Absurd? That is the precise idea behind Caviar's latest modified handset.

When luxury decides to get practical, and a little loud

Caviar, the Russian customizer famous for dressing Apple devices in exotic metals and eccentric motifs, has turned the iPhone 17 Pro into something that looks equal parts field instrument and objet d'art. The model, marketed as the Geiger, embeds a real dosimeter module into the back of the phone. No gimmicky app. No simulated readout. This is a functional Geiger-Müller counter, the SIG-RM1208, sitting where a glass back once was.

The dosimeter's small digital screen displays gamma radiation readings in real time and can be configured to emit an audible alarm if levels pass a preset threshold. Encircling that display is a conventional watch face driven by a Swiss Ronda 763 quartz movement, so you get both a radiation readout and analog timekeeping in one slice of hardware. It is a mashup that feels intentionally theatrical and oddly satisfying.

To make room for the instrument, Caviar replaced the iPhone's glass rear with a forged titanium shell. The new back is unapologetically industrial: exposed screws, thick metal plates, a single red stripe cleaving the spine, and a raised radiation hazard emblem near the bottom. Expect appreciable heft. The phone is noticeably thicker and heavier than an unmodified iPhone 17 Pro.

Production is painfully small. Only seven units will be made, each stamped with its production number and delivered with a certificate of authenticity. Pricing starts at €12,211 for the 256GB iPhone 17 Pro base configuration, and steps up if you opt for larger storage or the Pro Max variant.

For those following Caviar's recent moves, this release arrives shortly after the outfit introduced an ultra-luxury iPhone Ultra with a sterling silver makeover, priced at approximately €17,521. If you follow a pattern, it is this: rarity plus craftsmanship equals a very high tag. Whether the Geiger will find buyers is a different question; Caviar's audience tends to be collectors who relish one-off statements.

Is this practical? For the average user, no. For someone who wants a conversation piece that doubles as a radiation monitor, yes. The Geiger is less about mainstream utility and more about blending high-end finishing with a specialty instrument — a pocketable hybrid that raises eyebrows and questions in equal measure.

Only seven exist, and the entry price is €12,211.

Love it or scoff at it, the Geiger underlines where luxury tech is headed when makers stop following rules: function can be framed as fashion, and the line between tool and trophy keeps getting blurrier.