The Wristwatch Field Guide

Isotope Moonshot Chronograph Thunderclap

The Isotope Moonshot Chronograph Thunderclap is a current-production chronograph watch with a grey grade 5 case, finished with sand-blasted. It measures 41.0 mm across, 15 mm thick, 49.5 mm lug to lug, and is water resistant to 100 m. Inside is the Valjoux 7753 automatic chronograph movement, with 44 hours power reserve. Complications: Chronograph. Priced from $4,370 (GBP 3,240 incl VAT). Brand origin: United Kingdom.

Titanium and ceramic chronograph watchesTitaniumDisplay backUnder $5,000
Reference
Type
Chronograph
Price
$4,370 · GBP 3,240 incl VAT
Case diameter
41.0 mm
Thickness
15 mm
Lug-to-lug
49.5 mm
Water resistance
100 m
Weight
Origin
United Kingdom
Movement
Automatic chronograph
Caliber
Valjoux 7753
Power reserve
44 hours
Complications
Chronograph
Material
Titanium
Grade / type
Grade 5
Colour
Grey
Hardness
Construction
Surface treatment
Sand-blasted
Caseback
Nickel-free
Not verified (contact-point materials not all confirmed)
Bracelet / strap
Grade 5 titanium bracelet or FKM strap
Matching bracelet
Optional (or strap)
Crystal
Double-domed sapphire, AR
Display back
Yes
Dial
Embossed grey with metallic purple Moondiscs
Lume
Super-LumiNova X1
Availability
Offered
Status
Pre-order, limited to 30 pieces
High confidence Verified Jul 2026 Source: Isotope (maker product page) Maker / listing ↗ Suggested by u/Potential-Peace6416
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Frequently asked questions

What is the case material of the Isotope Moonshot Chronograph Thunderclap?

The Isotope Moonshot Chronograph Thunderclap has a grey grade 5 case. This is confirmed against the maker spec.

What size is the Isotope Moonshot Chronograph Thunderclap?

It is 41.0 mm in diameter, 15 mm thick, 49.5 mm lug to lug, and water resistant to 100 m.

How much does the Isotope Moonshot Chronograph Thunderclap cost, and is it available?

It is current-production and lists from $4,370.

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