Available$1,49040mm

Isotope Watches
Hydrium Grey Reef Shark
No restock pattern is established yet. Track to get alerted if it returns.
A Dress watch, in a rectangular titanium case, 40mm, with a blue matte dial, leaf hands and applied metal indices, powered by the ETA 7001.
This reference is currently out of stock, with no units available to buy. Compared with similar watches in its segment, the price here lands right around the median, showing no real premium or discount. Among the 82 tracked dress watches in this size and price class, prices span from $1,016 to $1,999.
Diameter
40mm
Lug to lug
40mm
Between lugs
20mm
Thickness
5.5mm
Movement Type
mechanical
Movement Name
ETA 7001
Water resistance
3 bar
Crystal Type
sapphire
Crystal Description
Flat Sapphire glass
Looking at Echo/Neutra's tracked catalog as a whole, about 82% of models sit in stock at any one time.
Worth tracking
Limited data
Not enough tracked history yet on this brand to read a pattern.
Last confirmed:
Tracked since 4/20/26 (148 days).
Sold out4/20/26
5 months straight
April 2026
Today
Currently priced at $1,792.65, with 4 price changes recorded over the tracked period. The lowest recorded price was $1,730.84 on 4/23/26; the highest was $1,792.65 on 4/22/26. That's up from the $1,792.65 it was first tracked at.
$1,792.65 USD9/13/26
$1,730.84
At its highest recorded price
$1,792.65
4 older price changes back to 4/22/26 are available with Collector. Unlock full history
Don't find out too late
Our weekly digest newsletter covers every new release from 340+ brands.
480+ subscribers · unsubscribe anytime
© 2026 chronoscout.co
all rights reserved
VAT EU372094125
VAT GB 515 677 276
built by Katalyze. in Switzerland
🍪 Cookies
We use cookies to analyze site usage and improve your experience, in accordance with our Cookie Policy .
Would you like to enable cookies for analytics?