Skip to content
WatchtheDetails

Movement · TMI (Seiko Instruments) · quartz

TMI VH31 movement

TMI VH31 takes SR920SW2, lasting about 2 years2. It is a quartz movement by TMI (Seiko Instruments): 23.7 mm1 across, 3.45 mm1 high, accurate to ±15 s/month2. 1 watch in our base uses it: AD2096 Explore Dive 36mm (list).

Sources checked · How we source numbers
TMI VH31: movement drawingTMI VH31, dial side, to scale: movement diameter 23.7 mm; size 10½‴; height 3.45 mm; hour, minute, second hand hole Ø — (unknown).movement Ø 23.710½‴ as printed · Ø 23.7 = 10.51‴3.45SIDE · SECTION · height 3.45Ahour, minute, second hand hole Ø —DETAIL A · 10:1
TMI VH31, dial sideDrawing from data, not a photo · mm

VH31 at a glance

Diameter
23.7 mm1
Height
3.45 mm1
Battery
SR920SW2
Battery life
2 years2
Accuracy
±15 s/month2
Jewels
02
Hands and functions
centre seconds, hours, minutes3

New to the terms? Read quartz vs automatic or watch movement types.

Watches with the VH31

Battery for the VH31

  • SR920SW[2]Sizes and equivalents of the SR920SW on its page

Running the VH31

Accuracy and battery figures for the VH31, as TMI prints them.

Accuracy (maker)
±15 s/month2
Battery life
2 years2

What fits the VH31

The figures a dial, hands or case must match for the VH31, as TMI prints them.

Stem part number
0351 1774

All VH31 figures

Every figure we hold for the VH31, with its source. Where sources disagree, each value is shown.

Size

Size in lignes
10½‴3
Diameter
23.7 mm1
Height
3.45 mm1

Running

Jewels
02
Hands and functions
centre seconds, hours, minutes3

Accuracy and care

Accuracy (maker)
±15 s/month2

Fitting: dial, hands, stem

Stem part number
0351 1774

Power

Battery
SR920SW2
Battery life
2 years2

Origin

Made in
Japan3

Not published yet

  • Low-battery sign: not published
  • Hand height options: only in TMI’s drawing; not read yet
  • Hand holes: only in TMI’s drawing; not read yet
  • Dial feet: only in TMI’s drawing; not read yet
  • Do not set the date: not published

Versions

VH31B1 · VH31B1L · VH31B3 · VH31B3L[6]

VH31 questions

Which watches use the VH31?

1 watch in our base name the VH31: AD2096 Explore Dive 36mm.

What battery does the TMI VH31 take?

The TMI VH31 takes SR920SW; TMI gives 2 years of life.

Source [2]

More on movements

Sources

Documents checked · Report a wrong number

  1. 1Time Module Ltd. — TMI Watch Movement Specification and Drawing (Spec Sheet) VH31 · pdf · read
  2. 2Time Module Ltd. — TMI Technical Guide & Parts Catalogue VH31 · pdf · read
  3. 3Time Module Ltd. — Product Line-Up - Sweep Second (VH): VH31-VH65 blocks · html · read
  4. 4Time Module Ltd. — TMI Parts List VH31 · pdf · read
  5. 5ADDIESDIVE — AD2096 Explore Dive 36mm product page · html · read