Undone · Microbrand · Hong Kong

Undone Aquadeep (NH37)

Limited · 2026 · Diver

Undone Aquadeep Submerge Carbon with black DLC titanium case, forged carbon dial and yellow accents on a yellow rubber strap
Photo: Undone
  • Undone Aquadeep Submerge Carbon Black Edition with forged carbon dial on a black strap
  • Undone Aquadeep Submerge Carbon dial with the 24-hour subdial at 10 and the date at 3
  • Undone Aquadeep Submerge Carbon black DLC titanium case side
  • Undone Aquadeep Submerge Carbon Black Edition see-through caseback
From $595
  • Seiko NH37A
  • 43 mm × 16.5 mm
  • 300 m water resistance

Movement

Type
Automatic
Tier
Entry
Complications
Date
Frequency
21,600 bph
Power reserve
41 h
Hacking
Yes
Accuracy (factory)
-20 / +40 s/day

Case

Diameter
43 mm
Lug to lug
—
Thickness
16.5 mm
Lug width
—
Material
Titanium
Hardening
—
Water resistance
300 m
Crown
—
Case back
Display
Bezel
60-minute dive, other insert
Colour coating
black DLC

Crystal & dial

Crystal
—
Shape
—
Anti-reflective
—
Lume
—

Bracelet

Bracelet
Not offered

Straps

Strap 1
Rubber, Yellow rubber strap (Submerge Carbon); black rubber strap per the Black Edition text, whose photos show a black fabric strap

Weight

Head only
—
On bracelet
—
On strap
—

Prices

VariantConfigurationTypePriceUSDAs ofSource
Submerge Carbon—Msrp595 USD$5952026-10-24link
Submerge Carbon Black Edition—Msrp595 USD$5952026-10-24link

Variants

NameReferenceDialBezelConfigurationStatus
Submerge CarbonAQD-DEP-SMG2forged carbon fibre with signal-yellow hands, markers and 24-hour subdial at 10, date at 3forged carbon fibre 60-minute dive bezelyellow rubber strapLimited
Submerge Carbon Black EditionAQD-DEP-SMG2forged carbon fibre, 24-hour subdial at 10 and date at 3; described as monochrome, though the photos show yellow-toned markersforged carbon fibre 60-minute dive bezelblack strapLimited

About this entry

47% of key specs known. Missing: lug-to-lug, lug width, weight, hardening, crystal, AR coating, crown, lume.

The titanium Aquadeep dive case with a Time Module (Seiko) NH37 automatic (date and a small 24-hour indicator, shown at 10 o'clock on the dials), sold as the Aquadeep Submerge Carbon, "released as a limited edition" in March 2026 with a Black Edition in April 2026 (no number of pieces is given). The other titanium Aquadeep builds (NH35, NH36, NH34 GMT) are separate models; the NH36 Submerge is rated to 500m, this build to 300m. Spec tables: "NH37 Automatic", forged carbon fibre dial, "Titanium case with DLC plating", carbon fibre bezel insert, 43mm excluding the crown (51mm including crown and crown guard), 16.5mm including the crystal (Submerge Carbon only), 30 ATM / 300m; both descriptions repeat the 300m and the carbon bezel insert. Neither listing names the crystal material, so it is left blank. The caseback, a see-through back in the photos, can be printed with a custom message of up to 29 characters at no extra cost (the listings' "Engrave a message on the caseback?" Yes/No option). No lug-to-lug, lug width, weight, lume type or crown details are published. Both listings were on sale on 2026-10-30 with "Estimated shipping: October". Editions. Submerge Carbon (AQD-DEP-SMG2, USD 595): forged carbon dial with signal-yellow hands, markers and subdial, carbon bezel, yellow rubber strap. Submerge Carbon Black Edition (same SKU, USD 595): Undone describes "monochrome details" and a black rubber dive strap, but its photos show yellow-toned markers and a black fabric strap (file name "20mm_Crodura").

Last verified: 2026-10-30. Edit or correct this entry.

Sources