Time Module Inc.

Time Module Inc. (TMI) is a brand of Seiko Instruments Inc. (SII) which offers assembled movements to other brands. TMI also sells Seiko Epson (SE) quartz movements. TMI movements use the prefix NH, NE, PC, VC, VD, VH, VJ, and VK.

Premium Mechanical Movements
- 12 ligne
  - NE15 (2010-present) = 6R15
  - NE20 (2010-present) = 6R21
  - NE57 (2017-present) = 4R57A
- 12.5 ligne chronograph
  - NE86 (2018-present) = 8R39A
  - NE88 (2015-present) = 8R family
Basic Mechanical Movements
- 7.75 ligne
  - NH05 (2009-present)
  - NH06 (2009-present)
- 10.5 ligne
  - NH15 (2009-present) = 4R15B
  - NH16 (2009-present) = 4R16B
- 12 ligne
  - NH25 (2008-2014) = 7S25B
  - NH26 (2008-2014) = 7S26B
  - NH35 (2011-present) = 4R35B
  - NH36 (2011-present) = 4R36A
  - NH37 (2011-present) = 4R37A
  - NH38 (2011-present) = 4R38A
  - NH39 (2011-present) = 4R39A
  - NH70 (2016-present) = 4R71A
  - NH71 (2018-present) = 4R71A
Standard Movements
- PC10
- PC11
- PC21AE
- PC21AF
- PC21J
- PC21S
- PC22
- PC23
- PC29
- PC32
- PC33
- PC39
Slim Small Movements
- VC00
- VC01
- VC10
- VC11
- VJ12
- VJ14
- VJ20
- VJ21
- VJ22
- VJ23
- VJ24
- VJ32
- VJ33
- VJ34
- VJ42
- VJ43
- VJ45
- VJ52
- VJ53
- VJ55
- VJ76
Dual Time Movements
- VD31
- VD32
- VD33
- VD34
- VD35
- VD36
- VD37
- VD38
Basic Chronograph Movements
- VD50
- VD51
- VD52
- VD53
- VD54
- VD55
- VD56
- VD57
- VD59
Two Hands Multi Eye Movements
- VD70
- VD72
- VD73
- VD74
- VD75
- VD76
- VD77
- VD78
- VD79
- VD84
- VD85
- VD86
- VD87
Sweep Second Three Hands Movements
- VH31
Sweep Second Multi Eye Movements
- VH60
- VH61
- VH63
- VH64
- VH65
- VH67
- VH68
- VH83
- VH88
Premium Chronograph Movements
- VK61
- VK62
- VK64
- VK67
- VK68
- VK73
- VK83