Isotope · Microbrand · United Kingdom
Isotope Mercury
- ETA 7001 (Peseux 7001)
- 38 mm × 10 mm
- Sapphire crystal
- 100 m water resistance
Where to buy
- IsotopeWorldwide
- Isotope (Alchemy)Worldwide
- Isotope (Shadow)Worldwide
- Isotope (Isotope x Revolution)Worldwide
- Isotope (Altmann x Isotope Osaka Cloisonné)Worldwide
- Isotope (Seconds Society x Isotope)Worldwide
Movement
- Caliber
- ETA 7001 (Peseux 7001)
- Type
- Hand-wound
- Tier
- Upper
- Complications
- Small seconds
- Frequency
- 21,600 bph
- Power reserve
- 42 h
- Hacking
- No
- Accuracy (factory)
- —
- Modifications
- Isotope calibre I-7: modified and regulated by Isotope, bespoke hand-finished bridge
Case
- Diameter
- 38 mm
- Lug to lug
- 44.5 mm
- Thickness
- 10 mm
- Lug width
- 20 mm
- Material
- Steel (316L)
- Hardening
- —
- Water resistance
- 100 m
- Crown
- Push/pull
- Case back
- Display, screw-down
- Bezel
- —
- Finishing
- Cushion-shaped case with Lacrima (teardrop) lugs; mirror-polished, dark gold PVD or sandblasted depending on edition
Crystal & dial
- Crystal
- Sapphire
- Shape
- Domed
- Anti-reflective
- Yes (side not stated)
- Lume
- —
Bracelet & clasp
- Style
- Beads of rice
- Links per row
- —
- Solid end links
- —
- Solid links
- Yes
- Link attachment
- Screws
- Taper
- 20 → 18 mm
- Quick release
- Yes
- Half links
- —
- Clasp
- Butterfly
- Micro-adjust
- On-the-fly
- Diver extension
- —
Straps
- Strap 1
- Leather, quick release, 20mm suede strap with signed buckle (grey on Shadow and Seconds Society, cream on Alchemy, off-white on Isotope x Revolution)
- Strap 2
- FKM rubber, quick release, 20mm CTS FKM rubber with signed spring-loaded buckle (Oracle Time Vitreous and Altmann x Isotope editions)
Weight
- Head only
- —
- On bracelet
- —
- On strap
- —
Prices
| Variant | Configuration | Type | Price | USD | As of | Source |
|---|---|---|---|---|---|---|
| Alchemy | — | Msrp | 2,300 GBPincl. VAT | $3,066 | 2026-10-24 | link |
| Shadow | — | Msrp | 2,580 GBPincl. VAT | $3,439 | 2026-10-24 | link |
| Oracle Time Vitreous Lava Orange | — | Msrp | 2,775 GBPincl. VAT | $3,699 | 2026-10-24 | link |
| Oracle Time Vitreous Spearmint Green | — | Msrp | 2,775 GBPincl. VAT | $3,699 | 2026-10-24 | link |
| Isotope x Revolution | launch price excluding UK VAT | Msrp | 1,990 GBPincl. VAT | $2,653 | 2024-05-28 | link |
| Altmann x Isotope Osaka Cloisonné | white FKM strap | Msrp | 3,600 GBPincl. VAT | $4,799 | 2026-03-24 | link |
| Altmann x Isotope Osaka Cloisonné | white FKM strap and Mercury bracelet | Msrp | 3,800 GBPincl. VAT | $5,066 | 2026-03-24 | link |
Variants
| Name | Dial | Configuration | Status |
|---|---|---|---|
| Alchemy | deep green enamelled sunburst | dark gold PVD case; dark gold PVD bracelet and cream suede strap included | Limited (40) |
| Shadow | silver grey, vertical satin-brushed | grey suede strap | Limited (100) |
| Oracle Time Vitreous Lava Orange | orange Grand Feu vitreous enamel | black DLC sandblasted case; black FKM strap | Limited (25) |
| Oracle Time Vitreous Spearmint Green | spearmint green Grand Feu vitreous enamel | bead-blasted case; grey FKM strap | Limited (25) |
| Isotope x Revolution | mirror-polished convex steel | mirror-polished case and hands; off-white suede strap | Limited (150) |
| Altmann x Isotope Osaka Cloisonné | grand feu cloisonné enamel on sterling silver (Osaka manhole cover) | mirror-polished case; white FKM strap, Mercury bracelet optional | Limited (5) |
| Seconds Society x Isotope | cold enamel sector dial, cream-to-grey degradé, burgundy hands | mirror-polished case; grey suede strap and Mercury S.S. bracelet | Limited (10) |
About this entry
74% of key specs known. Missing: weight, hardening, lume, bracelet links, end links.
Isotope's 38mm hand-wound dress watch, sold only in limited editions. All editions share the same spec table: 316L steel cushion case 38mm, 10mm and 44.5mm with lugs ("Case diameter 38mm x 10mm / 44.5mm (with lugs)"; the brand doesn't say whether the 10mm includes the domed crystal), anti-reflective domed sapphire, screw-in sapphire exhibition caseback, push-down crown with the Lacrima logo, 100m, 20mm quick-release straps. Movement: Isotope's calibre I-7, a modified and regulated ETA/Peseux 7001 (hand-wound, 17 jewels, 21,600 A/h, 42h, small seconds at 6) with a bespoke hand-finished bridge; no regulation figure is published. The Oracle Time x Isotope Mercury Vitreous (a collaboration with the watch site Oracle Time, 25 numbered pieces per colour) uses the same 38mm Mercury case and I-7 movement, so it is recorded as two variants here: Lava Orange in a sandblasted, black DLC-coated case and Spearmint Green in a bead-blasted case, both with Grand Feu vitreous enamel over a textured sterling silver base. Alchemy (40 pieces) has a dark gold PVD case and comes with a matching PVD bracelet plus a cream suede strap; the bracelet details are from the separately sold Mercury S.S. Bracelet (£248: rice-bead, solid screw links, quick-release, 20mm tapering to 18mm, signed trigger-release butterfly clasp with tool-free on-the-fly micro-adjustment). Shadow (100 pieces, mirror-polished case) was listed sold out on 2026-10-25 at £2,580, more than the newer Alchemy's £2,300; both recorded as listed. Isotope's store prices include UK VAT. The colour coatings (PVD, DLC) are cosmetic; no hardening is claimed. Lume isn't listed. Isotope also takes bespoke commissions for a Mercury with a hand-made straw-marquetry dial by Bernardo d'Orey (from £4,000 + VAT, £2,000 + VAT deposit); that listing is a commission service rather than a fixed watch, so it isn't recorded as a variant. Three sold-out editions, listed without a price, share the spec table: Isotope x Revolution (May 2024, with Revolution's Wei Koh; 150 pieces, 100 sold by Revolution and 50 by Isotope; fully mirror-polished case, hands and convex mirror dial; off-white suede strap; launch price £1,990 / USD 2,400 excluding taxes per WatchGecko), Altmann x Isotope (March 2026, with designer Björn Altmann; five grand feu cloisonné enamel dials of an Osaka manhole cover, with a signed copy of his book; £3,600 on white FKM or £3,800 with the bracelet, per Oracle of Time; Isotope's spec and photos show no small-seconds sub-dial on this edition, though the I-7 has one) and Seconds Society x Isotope (May 2026, 10 pieces; cold enamel sector dial with framed small seconds, burgundy hands, grey suede strap and Mercury bracelet; no price found).
Last verified: 2026-10-25. Edit or correct this entry.
Sources
- Isotope, Mercury Alchemy product page (specifications, limited to 40, price) accessed 2026-10-25
- Isotope, Mercury Shadow product page (specifications, limited to 100, sold out) accessed 2026-10-25
- Isotope, Oracle Time x Isotope Mercury Vitreous product page (specifications, 25 per colour, price) accessed 2026-10-25
- Isotope, Mercury S.S. Bracelet (rice-bead, screw links, butterfly clasp, micro-adjust, 20-18mm) accessed 2026-10-25
- Isotope, Métiers d'Art bespoke straw-marquetry Mercury commissions (from £4,000 + VAT) accessed 2026-10-25
- Isotope, Isotope x Revolution Mercury product page (specifications, 150 pieces, sold out in the UK, no price shown) accessed 2026-10-25
- Isotope, Mercury Altmann x Isotope product page (specifications, five cloisonné dials, sold out, no price shown) accessed 2026-10-25
- Isotope, Mercury Seconds Society x Isotope product page (specifications, 10 pieces, sold out, no price shown) accessed 2026-10-25
- WatchGecko, New Isotope x Revolution Mercury Released (£1,990 / USD 2,400 excluding taxes, 150 pieces) accessed 2026-10-25
- Oracle of Time, Altmann x Isotope Osaka Cloisonné Enamel (5 pieces, £3,600 or £3,800 with bracelet) accessed 2026-10-25