Sector II Field Titanium - Sequoia

Case diameter: 38 mm; Manufacturer spec
Lug-to-lug: 47 mm; Measured in a published review
Thickness: 11.7 mm; Measured in a published review
Lug width: 20 mm; Measured in a published review

Retail price $625 (US, Oct 2026)

Your wristIdeal fit

Wrist flat: 55.1 mmLug-to-lug: 47 mm

How the Sector II Field Titanium - Sequoia wears

Its lugs reach 9 mm past the 38 mm case, more than the 7 mm typical across the almanac, so it wears larger than its diameter suggests.

On our fit model it sits best on wrists from 6.5" to 7.75" (16.5–19.7 cm); below 6.5" the lugs start to reach the edge of the wrist.

At 11.7 mm thick it is thicker than 51% of the 35 other field watches we've measured, so expect it to sit tall on the wrist.

Its 20 mm lug width is one of the most common strap sizes; 156 other watches here share it, so aftermarket straps are easy to find.

Will the Sector II Field Titanium - Sequoia fit your wrist?

With a 47 mm lug-to-lug, here is how it wears across common wrist sizes. We estimate the flat top of each wrist from its circumference; measure yours for a closer answer in the fit finder.

Wrist	Flat width (est.)	Fit
6"	47.2 mm	Lugs overhang
6.5"	51.2 mm	Ideal fit
7"	55.1 mm	Ideal fit
7.5"	59.1 mm	Ideal fit
8"	63 mm	Wears small

Specifications

Reference: Sector II Field Titanium - Sequoia
Collection: Sector
Status: In production
Case material: grade 2 titanium, 2000HV hard coating
Crystal: box sapphire, blue AR interior
Water resistance: 100 m
Bezel: fixed
Dial: green
Strap / bracelet: grade 2 titanium bracelet and clasp
Style: Field

Movement

Caliber: Seiko Instruments (SII) NH38
Type: automatic
Power reserve: 41 hours
Frequency: 21,600 vph (3 Hz)

Takes 20 mm straps. See other 20 mm watches and straps.

Watches that wear the same size

Other watches within 1.5 mm of its lug-to-lug.

Same 20 mm lug width

All 20 mm watches

These take the same straps as the Sector II Field Titanium - Sequoia.