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TMI (Seiko Instruments)

TMI movements

11 TMI calibres on file (8 automatic, 3 quartz), from Time Module, the Seiko Instruments arm that sells NH and VK calibres to other watch brands. Each row gives the TMI figures with their source; open a calibre for its drawing, care figures and what replaces it.

Sources checked · How we source numbers

NH3x: the NH35 family

All 5: 5.32 mm high, 21,600 bph.

Calibre faces and heights from the makers’ figures, all to one scale; the bar and each grid square are 10 mm. Not photos.

  • automatic

    TMI NH35

    Diameter
    27.4mm
    Height
    5.32mm
    Beat rate
    21,600bph
    Reserve
    41h

  • automatic

    TMI NH34

    Diameter
    12‴
    Height
    5.32mm
    Beat rate
    21,600bph
    Reserve
    —

  • automatic

    TMI NH36

    Diameter
    27.4mm
    Height
    5.32mm
    Beat rate
    21,600bph
    Reserve
    —

  • automatic

    TMI NH38

    Diameter
    27.4mm
    Height
    5.32mm
    Beat rate
    21,600bph
    Reserve
    —

  • automatic

    TMI NH39

    Diameter
    27.4mm
    Height
    5.32mm
    Beat rate
    21,600bph
    Reserve
    —

VK6x mecha-quartz chronographs

All 2: 30.8 mm across, 5.1 mm high, SR936SW battery, rated ±20 s/month.

  • mecha-quartz

    TMI VK63

    Diameter
    30.8mm
    Height
    5.1mm
    Battery
    SR936SW
    Battery life
    3years

  • mecha-quartz

    TMI VK64

    Diameter
    30.8mm
    Height
    5.1mm
    Battery
    SR936SW
    Battery life
    3years

VH3x quartz

  • quartz

    TMI VH31

    Diameter
    23.7mm
    Height
    3.45mm
    Battery
    SR920SW
    Battery life
    2years

NH7x: open-heart and skeleton

All 2: 27.4 mm across, 5.32 mm high, 21,600 bph, rated −20 to +40 s/day.

  • automatic

    TMI NH70

    Diameter
    27.4mm
    Height
    5.32mm
    Beat rate
    21,600bph
    Reserve
    41h

  • automatic

    TMI NH72

    Diameter
    27.4mm
    Height
    5.32mm
    Beat rate
    21,600bph
    Reserve
    41h

NH0x

  • automatic

    TMI NH05

    Diameter
    7¾‴
    Height
    5.92mm
    Beat rate
    21,600bph
    Reserve
    —

TMI figures in one table

Show the tables · 11 calibres, every figure with its source

NH3x: the NH35 family

NH3x: the NH35 family: key figures
CalibreSizeHeightJewelsBeat rateReserveType
NH3412‴15.32 mm224121,600 bph1—automatic
NH3527.4 mm35.32 mm324121,600 bph141 h4automatic
NH3627.4 mm55.32 mm524121,600 bph1—automatic
NH3827.4 mm65.32 mm6—21,600 bph7—automatic
NH3927.4 mm85.32 mm8—21,600 bph9—automatic

VK6x mecha-quartz chronographs

VK6x mecha-quartz chronographs: key figures
CalibreSizeHeightBatteryBattery lifeAccuracyType
VK6330.8 mm105.1 mm11SR936SW123 years12±20 s/month12mecha-quartz
VK6430.8 mm135.1 mm13SR936SW143 years14±20 s/month14mecha-quartz

VH3x quartz

VH3x quartz: key figures
CalibreSizeHeightBatteryBattery lifeAccuracyType
VH3123.7 mm153.45 mm15SR920SW162 years16±15 s/month16quartz

NH7x: open-heart and skeleton

NH7x: open-heart and skeleton: key figures
CalibreSizeHeightJewelsBeat rateReserveType
NH7027.4 mm175.32 mm18241821,600 bph1841 h19automatic
NH7227.4 mm205.32 mm18242121,600 bph1841 h21automatic

NH0x

NH0x: key figures
CalibreSizeHeightJewelsBeat rateReserveType
NH057¾‴225.92 mm22212221,600 bph22—automatic

A dash means TMI does not publish the figure or it is not in the documents we read; each calibre page says which.

TMI movement questions

Which TMI movement is the thinnest?

Of the calibres with a published height, the VH31 at 3.45 mm; the tallest is the NH05 at 5.92 mm.

Which TMI movement runs longest on a full wind?

NH35, at 41 h as TMI rates it; NH70 41 h, NH72 41 h follow.

More movements

Sources

Documents checked · Report a wrong number

  1. 1Time Module Ltd. — Product Line-Up - Mechanical (NH0&NH3); NH34/NH35/NH36 product blocks · html · read
  2. 2Time Module Ltd. — Watch Movement Specification and Drawing - Standard Mechanical Movement NH34A · pdf · read
  3. 3Time Module Ltd. — Watch Movement Specification and Drawing - Standard Mechanical Movement NH35A · pdf · read
  4. 4Time Module Ltd. — Technical Guide & Parts Catalogue, Cal.NH3 Series (NH34A/35A/36A/37A/38A/39A) - Automatic Mechanical · pdf · read
  5. 5Time Module Ltd. — Watch Movement Specification and Drawing - Standard Mechanical Movement NH36A · pdf · read
  6. 6Time Module Ltd. — TMI Watch Movement Specification and Drawing (Spec Sheet) NH38 · pdf · read
  7. 7Time Module Ltd. — TMI Technical Guide & Parts Catalogue NH38 · pdf · read
  8. 8Time Module Ltd. — TMI Watch Movement Specification and Drawing (Spec Sheet) NH39 · pdf · read
  9. 9Time Module Ltd. — TMI Technical Guide & Parts Catalogue NH39 · pdf · read
  10. 10Time Module Ltd. — TMI Watch Movement Specification and Drawing (Spec Sheet) VK63 · pdf · read
  11. 11Time Module Ltd. — Product Line-Up - Premium Chronograph (VK): VK61-VK73 blocks · html · read
  12. 12Time Module Ltd. — TMI Technical Guide & Parts Catalogue VK63 · pdf · read
  13. 13Time Module Ltd. — TMI Watch Movement Specification and Drawing (Spec Sheet) VK64 · pdf · read
  14. 14Time Module Ltd. — TMI Technical Guide & Parts Catalogue VK64 · pdf · read
  15. 15Time Module Ltd. — TMI Watch Movement Specification and Drawing (Spec Sheet) VH31 · pdf · read
  16. 16Time Module Ltd. — TMI Technical Guide & Parts Catalogue VH31 · pdf · read
  17. 17Time Module Ltd. — TMI Watch Movement Specification and Drawing (Spec Sheet) NH70 · pdf · read
  18. 18Time Module Ltd. — Product Line-Up - Skeleton Mechanical (NH7): NH70/NH71/NH72 blocks · html · read
  19. 19Time Module Ltd. — TMI Technical Guide & Parts Catalogue NH70 · pdf · read
  20. 20Time Module Ltd. — TMI Watch Movement Specification and Drawing (Spec Sheet) NH72 · pdf · read
  21. 21Time Module Ltd. — TMI Technical Guide & Parts Catalogue NH72 · pdf · read
  22. 22Time Module Ltd. — Product Line-Up - Mechanical (NH0&NH3): NH05 block · html · read