Sold out 40mm

Isotope Watches
HydriumX "Will Return"
Buy it directly from the brand's website.
It usually sells out in about 24 days.
A Chronograph watch, in a round stainless steel case, 41mm, with a white matte white lacquer dial, sword hands and applied metal indices, powered by the Landeron 72.
This reference is currently in stock and available for direct purchase from the brand. Its price sits close to the median for comparable watches in its segment, neither a premium nor a bargain within that group. The 28 comparable chronograph watches tracked in this size and price class range from USD 2,083 to USD 4,334.
Diameter
41mm
Lug to lug
48.5mm
Between lugs
20mm
Thickness
15.85mm
Movement Type
automatic
Movement Name
Landeron 72
Power reserve
72 hours
Water resistance
10 bar
Crystal Type
sapphire
Crystal Description
Double domed sapphire crystal
In stock and widely available. Scarcity score: 21/100. Among tracked chronograph watches in this class, that score lands it in roughly the top 20%. The scarcity score here has moved up around 5 points across the past 179 days. It peaked near a score of 56 in June 2026. That tracks closely with what's typical for Nivada Grenchen's catalog.
It has remained continuously available for 11 weeks, well beyond the 11 days this brand's models typically stay in stock before selling out. How often this reference comes back in stock lines up with this brand's usual restock rhythm.
No rush
Brand pattern · 126 models
Unlike this brand's typical pattern, this reference has remained available for about 11 weeks.
21
May 2026
Scarcity score · today
Scarcity scoreModeled21/100
Compared with 27 active peers · Chronograph · 40 - 42mm · $2,000–$5,000
Scarcity rank (in its segment)Top 20%
Sells out inDerived~3 weeks
Restocks everyDerived~26 days
Price vs segment15% below segment median
Demand unlocks as Chronoscout gathers more market data on this reference.
Last confirmed:
8 availability changes recorded. In-stock windows ranged from 5 days to 132 days. Longest sold-out stretch: 3 days. Last restocked on 8/18/26.
Tracked since 10/9/25 (389 days).
Available8/18/26
77 days straight
November 2025
Today
Sold out · for 1 day8/16/26
Available · for 5 days8/11/26
Sold out · for 3 days8/8/26
Available · for 43 days6/26/26
Sold out · for 18 hours6/25/26
Available · for 125 days2/20/26
Sold out · for 2 days2/19/26
Available · for 1 day2/18/26
Unknown · for 12 hours2/17/26
Available · for 21 days1/27/26
Unknown · for 12 hours1/26/26
Available · for 13 days1/14/26
Unknown · for 12 hours1/13/26
Available · for 12 hours1/13/26
Unknown · for 12 hours1/12/26
Available · for 57 days11/16/25
Unknown · for 3 hours11/16/25
Currently priced at $2,562.74, with 3 price changes recorded over the tracked period. The lowest recorded price was $2,295.00 on 11/10/25; the highest was $2,562.74 on 8/31/26. That's up from the $2,295.00 it was first tracked at.
$2,562.74 USD10/1/26
$2,295.00
At its highest recorded price
$2,562.74
$2,295.00 · down $267.749/13/26
$2,562.74 · up $267.748/31/26
$2,295.0011/10/25
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