Movement · TMI (Seiko Instruments) · automatic

TMI NH05 movement

TMI NH05 is an automatic movement by TMI (Seiko Instruments): 7¾‴1 in size, 5.92 mm1 high, 211 jewels, beating at 21,600 bph1.

Sources checked October 13, 2026 · How we source numbers

TMI NH05, dial sideDrawing from data, not a photo · mm

NH05 at a glance

Diameter: 7¾‴1
Height: 5.92 mm1
Jewels: 211
Beat rate: 21,600 bph1
Do not set the date: 22:00–01:002

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

Setting and servicing the NH05

The figures a watchmaker or a timegrapher needs for the NH05, as TMI prints them.

Do not set the date: 22:00–01:002
Hand winding: Yes2

All NH05 figures

Every figure we hold for the NH05, with its source. Where sources disagree, each value is shown.

Size

Size in lignes: 7¾‴1
Height: 5.92 mm1

Running

Jewels: 211
Beat rate: 21,600 bph1
Hands and functions: hours, minutes, centre seconds, date1
Hand winding: Yes2

Accuracy and care

Do not set the date: 22:00–01:002

Origin

Made in: Japan or Malaysia1

Not published yet

Power reserve: only in TMI’s drawing; not read yet
Accuracy (maker): only in TMI’s drawing; not read yet
Lift angle: 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
Stem part number: only in TMI’s drawing; not read yet

Versions

NH05B11WMN · NH05B12WMN · NH05B12MNB[3]

TMI documents

NH05 questions

When should you not change the date on the NH05?

Not between 22:00 and 01:00, per TMI: the NH05’s date change is engaged then, so move its hands past 01:00 before using the quick-set.

Source [2]

Does the NH05 hack and hand-wind?

Hacking is not stated. It can be wound by the crown.

Source [2]

Sources

Documents checked October 13, 2026 · Report a wrong number

1Time Module Ltd. — Product Line-Up - Mechanical (NH0&NH3): NH05 block · html · read Oct 2026
2Time Module Ltd. — TMI Operation Manual NH05 · pdf · read Oct 2026