Seiko is one of the few completely-integrated manufactures of watches.

As with Seiko's watches, there were two “streams” of movements from the two Seiko watch companies, Suwa and Daini.

• Suwa
  • Seiko Marvel/Gyro Marvel/290 (1956-1959) - Suwa
  • Seiko 560/3180 (1960-1964) - Suwa, 28 mm, 18,000 A/h, used in Grand Seiko
  • Seiko 436/4361/957/410/66/6602/6606 (1961-1967) - Suwa, 24.1 mm, 17, 19, or 21 jewels, 18,000 A/h
  • Seiko 430/5700/5722 (1963-1969) - Suwa, 28 mm, “self-dater”, 18,000/19,800/36,000 A/h, used in Grand Seiko 57GS, Lord Marvell
• Daini
  • Seiko Cronos/54A
  • Seiko 60A (1960) - Daini Goldfeather
  • Seiko 4400 (1964-1968) - Daini, 26 mm, 18,000 A/h, used in King Seiko 44KS, Grand Seiko 44GS
  • Seiko 4500 (1968-1973) - Daini, 27.4 mm, 25 jewels, 36,000 A/h, used in King Seiko 45KS, Grand Seiko 45GS
  • Seiko 6800 (1969-Present) - 21/22/26 jewels, ultra-thin
• Modern
  • Seiko 4S15 family (1992-2013) - 21-31 jewels, 28,000 A/h (hand-winding variant of automatic family)
  • Seiko 8L/9S family (1998-Present) - 28,800 or 36,000 A/h, used in Grand Seiko (hand-winding variant of automatic family)

As with Seiko's watches, there were two “streams” of movements from the two Seiko watch companies, Suwa and Daini, and frequently two more streams, 26 mm and a larger size nearer to 28 mm.

Seiko's basic automatics are marked by slower speed (18,000 or 21,600), less features than contemporaries (hacking, hand-winding, complications), fewer jewels, and use in budget models.

• Suwa large
  • Seiko 245/660/790/2451/6600 (1961-1967) - Suwa, 28.1 mm, 17, 19, or 21 jewels, 18,000 A/h, used in Sportsmatic and SilverWave
  • Seiko 6300 (1976-1988) - Suwa, 27.4 mm, 17/21/23 jewels, 21,600 A/h, used in Five
• Daini small
  • Seiko 7000 (1968-1990's) - Daini, 26 mm, 17/21 jewels, 21,600 A/h, used in Automatic, Five Sports, Chronograph, Actus
  • Seiko 7S26 family (1996-Present) - 21/23 jewels, 21,600 A/h, used in Five
  • Seiko 4R35 family (2010-Present) - 23/24 jewels, 21,600 A/h
• Alarm
  • Seiko 4006 (1967-1978) - Suwa, 31.2 mm, 17/21/27 jewels, 19,200 A/h, alarm function, used in Bell-Matic and Business Bell

Seiko's midrange movements are characterized by better performance and use in higher-end models.

• Suwa Large
  • Seiko 394/395/400/603/6200 (1960-1969) - Suwa, 28 mm, 17 to 39 jewels, 18,000 A/h, used in Seikomatic, “daters”, Grand Seiko 62GS
  • Seiko 830/840/8300 (1963-1969) - Suwa, 29 mm, 27, 30, or 39 jewels, used in Seikomatic and Business
• Daini Large
  • Seiko 820/7600 (1963-1969) - Daini, 28 mm, 17, 23, or 25 jewels, used in Sportsmatic Deluxe
• Daini Small
  • Seiko 5100 (1967-1971) - Daini, 26 mm, 23/27/30/33 jewels, used in Seikomatic, New Five, Presmatic
  • Seiko 4R15 family (2008-Present) - 22 jewels, 21,600 A/h, used in Superior, SRP
  • Seiko 6R15 family (2006-Present) - 23/29/31 jewels, 21,600 or 28,000 A/h

• Suwa large
  • Seiko 11A/290 (1955-1960) - Seiko's first automatic movement, 17 or 21 jewels (based on Swiss AS 1382)
  • Seiko 6100 (1967-1979) - Suwa, 27.4 mm, 17/21/23/25 jewels, 21,600 or 36,000 A/h, used in Five, Diver, World Time, Grand Seiko 61GS
• Suwa small
  • Seiko 5600 (1967-1977) - Suwa, 26 mm, 23/25 jewels, 21,600 or 28,800 A/h, used in Lord Matic, Chronometer, King Seiko 56KS, Grand Seiko 56GS
• Daini Thin and Small
  • Seiko 5200 (1970-1977) - Daini, 26 mm, 23/25 jewels, 28,800 A/h, used in Lord Matic, King Seiko 52KS
  • Seiko 4S family (1992-2013) - 21-31 jewels, 28,000 A/h (closely related to 5200 family)
  • Seiko 4L family (1990's-2000's) - 25 jewels, thin (rights sold to Soprod as their A-10)
• Modern
  • Seiko 8L/9S family (1998-Present) - 28,800 or 36,000 A/h, used in Grand Seiko

• Seiko 6139 family (1969-1979) - Suwa, 27.4 mm, 21,600 A/h, automatic column wheel, vertical clutch chronograph
• Seiko 7015 family (1971-1990's) - Daini, 26 mm, 21/23 jewels, 21,600 A/h, cam-switched chronograph
• Seiko 6S78 family (1998-Present) - 34/35/40 jewels, 28,800 A/h, column wheel chronograph
• Seiko 8R28 family (2008-Present) - 34 jewels, 28,800 A/h, 3-clutch column wheel chronograph

• Seiko 7R Spring Drive (1999-Present) - Credor
• Seiko 9R Spring Drive - Grand Seiko

• Seiko 35A/35SQ/35SQC (1967-1972) - Suwa - The first Seiko Quartz movement, 8192 Hz with stepper motor
• Seiko 3600/3602A (1970) - Daini - 16,384 Hz with stepper motor, produced only in 1970
• Seiko 38 (1971-1976) - Suwa - 16,384 Hz with stepper motor, Seiko's first volume quartz movement
  • Seiko 3800/3802/3803 38QT - Mainstream
  • Seiko 3820/3823A 38SQ V.F.A. (1971) - Produced in high volume for years
  • Seiko 3862/3863 38QR - Cost-reduced 5 jewel
  • Seiko 3870
  • Seiko 3882/3883 GFA/Superior - Ultra-accurate high-end
  • Seiko 3819 Dual Zone Timer
• Seiko 03 SQ (1972-1973) - Suwa - Seiko's first ladies' quartz movement, produced in very small numbers
• Seiko 3922 39SQ V.F.A. (1972-1976) - Pulsing LED
  • Seiko 3923 39SQ V.F.A. (1974) - With day and date
• Seiko 0614A (1973-1976) - First LCD watch with seconds display
  • Seiko 0634 (1975) - First LCD chronograph (Seiko Quartz LC Chronograph)
• Seiko 41 (1974-1977) - Suwa - The first production ladies' quartz movement
  • Seiko 4100/4110A/4110B (1974)
  • Seiko 4130A/4130B (1974)
  • Seiko 4120 Emblem (1975)
  • Seiko 4122 (1976)

• Seiko 08 (1974-1977) - Daini - HAQ for King Quartz
  • Seiko 0822/0823 (1974)
  • Seiko 0841/0842 08QZ
  • Seiko 0843
  • Seiko 0852/0853 08KQ King Quartz
• Seiko 43 (1975-1987) - Daini - High-end compact
  • Seiko 4300/4301/4302 (1975)
  • Seiko 4303 (1976)
  • Seiko 4312 (1977)
  • Seiko 4316 43TP Type II (1977)
  • Seiko 4325/4326 Type 43TP II
  • Seiko 4335/4336 Type 43TP II
  • Seiko 4366
• Seiko 09 (1975) - Suwa
  • Seiko 0903 (1975)
  • Seiko 0920/0922/0923 09QZ
• Seiko 48 (1974-1979) - Suwa
  • Seiko 4803A
  • Seiko 4821/4822A/4822B/4823A/4823B 48KQ King Quartz (1975-1979)
  • Seiko 4840A/4842A/4843A 48GQ Grand Quartz
  • Seiko 4883A/4883B Superior Quartz
  • Seiko 4840B/4842B/4843B
  • Seiko 4826
• Seiko 01 - LCD watch (Seiko Quartz LC)
• Seiko 46 - Daini
  • Seiko 4623 46TP Type II
• Seiko 47 - Suwa? - compact
  • Seiko 4720
• Seiko 75 - Suwa
  • Seiko 7518
  • Seiko 7546 75TP Type II
  • Seiko 7546 75SL SilverWave
  • Seiko 7548 75DW
  • Seiko 7559 Type II

• Seiko 78 - Suwa
  • Seiko 7820
  • Seiko 7830/7832
  • Seiko 7853 78LQ Lord Quartz
  • Seiko 99 - Suwa - High-end Twin Quartz version
    • Seiko 9923 99KQ King Quartz (1980) - Replaced Cal. 48 for King Quartz in 1980
    • Seiko 9940/9942/9943 99GQ Grand Quartz
    • Seiko 9983 Superior
• Seiko 16 - Ladies
  • Seiko 1600
• Seiko 58 (1977-1979) - Daini - Replaced Cal. 08 in 1977 for King Quartz
  • Seiko 5854/5855/5856 58KQ King Quartz (1977-1979)
  • Seiko 92 - Daini - High-end Twin Quartz version
    • Seiko 9256 92GQ Grand Quartz
• Seiko 71 - Daini - Upper-mid
  • Seiko 7121/7122/7123 71TP Type II
  • Seiko 7143 71LQ Lord Quartz
  • Seiko 97 (1979-) - Daini - Twin Quartz version; Replaced Cal. 58 in 1980 for King Quartz
    • Seiko 9721/9722/9723 97KQ King Quartz
• Seiko 23
  • Seiko 2320
• Seiko 26
  • Seiko 2620/2621
  • Seiko 2525 26DV
  • Seiko 2632
• Seiko 14
  • Seiko 1400
• Seiko 82 - Suwa
  • Seiko 8221/8229 82SL SilverWave
  • Seiko 8223 82TP Type II
  • Seiko 8241/8242/8243 82LQ Lord Quartz
• Seiko 59
  • Seiko 5930/5931/5932 SilverWave
  • Seiko 96 - Twin Quartz version
• Seiko 60
  • Seiko 6020
  • Seiko 6030 SilverWave
• Seiko 72 - Daini - Alarm
  • Seiko 7223
• Seiko 79 - Suwa - Compact
  • Seiko 7918
• Seiko 64
  • Seiko 94 - Twin Quartz version

• Seiko 9320A (1978) - Ultra-thin 0.95 mm movement
• Seiko 7A28 (1983) - World's first quartz analog chronograph
• Seiko 7M22 (1988) - World's first automatic quartz movement, Seiko AGS
• Seiko 5M23 (1993) - Volume-produced automatic quartz movement, Seiko Kinetic

• Seiko 7A (1982-) - The first analog quartz chronograph
• Seiko 8J (-Present) - Compact high-end quartz
• Seiko 9F (1993-Present) - High-end quartz

• Seiko calibres