At some point, every luxury phone brand reaches a crossroads between “genuinely impressive” and “completely unhinged.” Caviar just sprinted past that line. The Russian custom phone maker has launched a modified iPhone 17 Pro called the Geiger, and as the name suggests, it has a real, functional Geiger counter physically embedded in the back of the phone. Not a sensor. Not an app. A dosimeter watch. In a phone.
The specific module is the SIG-RM1208, a Geiger-Müller counter that measures gamma radiation in your surrounding area. It sits right in the center of the phone’s rear panel with a small digital screen showing live radiation readings. You can set it to beep when levels pass a threshold you define. Surrounding that digital display is an analog watch face running on a Swiss Ronda 763 quartz movement, so the whole thing reads both the time and the ambient radiation simultaneously. It’s a lot. And honestly, it’s kind of fascinating.
To house all of this extra hardware, Caviar ditched Apple’s standard glass back entirely and replaced it with a titanium shell that looks straight off a Soviet-era instrument panel. Exposed screws, thick metal plates, a red stripe down the center, and a raised radiation hazard symbol near the bottom. It is heavy, it is thick, and it makes absolutely no attempt to be subtle about any of it.
Caviar is making exactly seven of these. Each one is individually numbered, engraved on the case, and comes with a certificate of authenticity. The base price of $13,130 gets you the 256GB iPhone 17 Pro, but the price climbs if you want more storage or the larger Pro Max version. That’s a significant premium over an already expensive flagship phone, and you’re mostly paying for the craftsmanship, the rarity, and the sheer audacity of the concept.
So who actually buys this? That’s always the question with Caviar. The company has built a consistent customer base among collectors and high-net-worth buyers who want objects that are genuinely one-of-a-kind. A gold-plated phone is a flex. A phone with a built-in radiation detector is a conversation piece on a different level entirely. It’s the kind of thing that sits in a display case or gets carried into rooms specifically to make people stop and stare.
It also fits a broader trend of luxury brands pushing into ultra-limited tech. Caviar recently put out an iPhone Ultra wrapped in sterling silver for $18,840, showing that the appetite for these objects isn’t slowing down. These aren’t phones for people who need a phone. They’re for people who collect things that happen to also make calls.
Is the Geiger counter useful? Almost certainly not for most people. But that’s not really the point. The point is that it works, it’s real, and nobody else thought to do it first. That counts for something in this space, even if it’s a very strange space to be in.