Aragon · Microbrand · United States

Aragon DiveTank 40mm (Seiko NH35)

In production · Diver

From $260
  • Seiko NH35A
  • 40 mm × 15.5 mm
  • K1 mineral crystal
  • 500 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
40 mm
Lug to lug
—
Thickness
15.5 mm
Lug width
20 mm
Material
—
Hardening
—
Water resistance
500 m
Crown
Screw-down
Case back
Display
Bezel
Unidirectional
Helium valve
Yes

Crystal & dial

Crystal
K1 mineral
Shape
—
Anti-reflective
—
Lume
—

Bracelet

Bracelet
—

Straps

Strap 1
Silicone, 8.5" long and 20mm wide, with a 20mm buckle

Weight

Head only
—
On bracelet
—
On strap
—
Stated weight (basis not given)
122 g

Prices

VariantConfigurationTypePriceUSDAs ofSource
Blue—Msrp260 USD$2602026-11-01link
Blue—Sale169 USD$1692026-11-01link
Red—Msrp260 USD$2602026-11-01link
Teal—Msrp260 USD$2602026-11-01link
Teal—Sale169 USD$1692026-11-01link
White—Msrp260 USD$2602026-11-01link
White—Sale189 USD$1892026-11-01link
Yellow—Msrp260 USD$2602026-11-01link
Yellow—Sale169 USD$1692026-11-01link

Variants

NameReferenceDial
BlueA662BLUblue
RedA662REDred
TealA662TEAteal
WhiteA662WHTwhite
YellowA662YELyellow

About this entry

60% of key specs known. Missing: lug-to-lug, case material, hardening, AR coating, lume, bracelet offered.

Sold as "DiveTank 40mm" (listing "DF DiveTank SII NH35 Automatic"), in Aragon's DF (Depth Fighter) series. Brand spec list (each colour's page): "SII NH35 Day with 24 jewels automatic", movement from Japan; 40mm case, 15.5mm thick (not said whether with the crystal); "K1 hardened mineral" crystal; screw-down crown; silicone strap, 8.5" long and 20mm wide (lug width taken from the strap width), 20mm buckle; "50 ATM - 500 meters - 1650 feet"; unidirectional rotating bezel; exhibition case back; helium release valve; weight 4.3 oz (recorded as 122g, not said what was weighed). The NH35 has no day display and the photos show only a date window at 3, so the caliber is recorded as named and "Day" is taken as a slip. Lug to lug, case material and lume aren't stated. On 2026-11-01 all five colours were in stock at an Our Price of $260; blue, teal and yellow were on sale at $169 and white at $189, red at $260.

Last verified: 2026-11-01. Edit or correct this entry.

Sources