
Introducing the new Moonshot Thunderclap
A New Frequency
A sudden flash.
A rolling echo.
A bolt of color against a brooding sky.

The Moonshot Thunderclap is not a departure from the Moonshot platform; it’s a surge of new energy through it.
Built on the same architecture that defines the Moonshot chronograph, Thunderclap retains the platform’s technical integrity while introducing a bold new visual language. Familiar in structure. Entirely new in attitude.
And at the center of that shift is a creative collaboration with designer Matt Smith-Johnson, known to many as Teenage Grandpa.
The Foundation Remains
Thunderclap maintains everything that makes a Moonshot a Moonshot:
- Sandblasted Grade 5 titanium case
- 41mm diameter, 49.5mm lug-to-lug
- Double-domed sapphire crystal
- 100m water resistance
- Automatic chronograph movement (ETA Valjoux 7753 or Landeron 73)
- Exhibition caseback
The architecture is unchanged. The performance is unchanged. The proportions are unchanged.
Only the visual frequency has shifted.
A Storm in Grey and Purple
Thunderclap strips away the DLC coating found on some previous editions, allowing the natural character of sandblasted titanium to take center stage. It is clean, purposeful, and honest.
The dial is where the storm gathers.
A grey embossed dimple surface evokes charged clouds before lightning breaks.
Metallic purple Moondisc sub-dials shimmer as the light moves across them.
Matching purple chronograph pushers introduce a deliberate flash of color at the case flank.

The result is industrial yet electric. Understated at first glance, explosive on closer inspection.
The First Telemeter Moonshot
Thunderclap also marks a milestone for Isotope:
our first chronograph featuring a telemeter scale.
Traditionally used to measure the distance between a visible event and the sound it produces, such as lightning and thunder, the telemeter scale allows the wearer to calculate distance by timing the interval between flash and sound.
It’s a complication rooted in science and instinct. And for a watch named Thunderclap, it feels inevitable.
Function meets storytelling. Precision meets poetry.
The Role of Teenage Grandpa
When José Miranda first met Matt Smith-Johnson, he recognized a designer with a distinct visual voice. Someone capable of respecting the Moonshot’s structure while pushing its aesthetic language forward.
Matt’s background in typography and graphic design is evident in Thunderclap’s balance of restraint and rebellion. The purple accents are bold but intentional. The dial texture adds depth without sacrificing legibility. The telemeter scale integrates seamlessly into the architecture.
This is not a redesign for the sake of disruption. It is a reinterpretation with purpose.
Thunderclap could only exist within the Moonshot framework, but it could only look like this through Matt’s lens.
Configuration & Availability
The Moonshot Thunderclap is limited to 30 pieces worldwide.
It is available in two configurations:
- £2,400 — Purple FKM rubber strap
- £2,720 — Rubber strap plus sandblasted titanium bracelet

The bracelet will also be offered separately, with dedicated imagery available for those wishing to purchase it independently.
Same Platform. New Voltage.
Thunderclap does not whisper.
It takes the Moonshot’s proven foundation and charges it with a new current. A tension between industrial titanium and electric purple, between heritage chronograph architecture and contemporary design instinct.
Same foundation.
New frequency.
A Moonshot that strikes before you hear it coming.
