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Tissot 782-1
Manual · 11.5‴ · Switzerland · 1965
Dimensions
26 mm
Height
3.70mm
Jewels
17
Power reserve
49h
Timegrapher
Beat rate
18,000bph
Frequency
2.5Hz
Reference: healthy amplitude ≈ 270–315° fully wound (>200° at 24 h); beat error ideally < 0.5 ms.
Movement
| Movement type |
Manual
Purely mechanical movements wound by hand via the crown, which tensions the mainspring to store energy. As the spring unwinds, it drives the gear train at a controlled rate set by the escapement and balance. Typical power reserves range from 38 to 80 hours, requiring daily or near-daily winding to keep the watch running.
|
|---|---|
| Winding type |
Stem Winding (Crown)
Winding the mainspring by turning the crown attached to the stem, transmitting torque through the winding pinion. Patented by Adrien Philippe in 1842, it replaced key winding and remains the standard manual winding method for both pocket watches and wristwatches.
|
| Setting type |
Stem Set (Crown Pull)
The dominant modern system: pulling the crown out to a setting position engages the hand-setting mechanism. Introduced in the late 19th century and refined into multi-position crowns (date, time, GMT). Used in virtually all modern wristwatches and most 20th-century pocket watches.
|
| Escapement type |
Swiss Lever
The undisputed standard of modern mechanical watchmaking. Through an elegant interplay between escape wheel, pallet fork, and balance, it delivers reliable impulses with the safety of 'draw' to keep the lever locked. Refined since the 18th century, it powers almost every quality mechanical wristwatch made today.
|
| Control type |
Balance Wheel
The heart of mechanical timepieces, the balance wheel is an oscillating component that, together with the hairspring, forms a harmonic oscillator regulating the gear train's pace. Its steady back-and-forth motion ensures the even release of energy from the mainspring, governing the watch's accuracy.
|
| Regulator type |
Pinned Regulator (or Index Regulator)
The most traditional regulator, consisting of a movable index pointer fitted with two curb pins (or a pin and a boot) that embrace the hairspring. Sliding the index along its scale changes the spring's active length, adjusting the rate. Simple, reliable, and easy to service, it remains the workhorse standard across countless mechanical movements.
|
| Shock protection |
Incabloc
The most famous and widely used shock protection system in horology. Invented in 1934 by Georges Braunschweig and Fritz Marti at Universal Escapements (La Chaux-de-Fonds), it employs a lyre-shaped spring holding the jewel setting, allowing it to shift under impact and return to position. Adopted by countless Swiss makers across the 20th century.
|
Specifications
| Lignes | 11.5‴ |
|---|---|
| Shape |
Round
It is the most common form that we can find.
|
| Complications |
Sweep Second
Contrary to the ticking motion of quartz watches, the sweep second hand in mechanical watches moves smoothly around the dial, offering a visual representation of time flowing continuously. This has become synonymous with the precision and craft of mechanical horology.
,
Date
An essential for many, the date display reminds wearers of their daily commitments, connecting the abstract concept of time to tangible daily events.
|
| Hand count | 3 |
| Hand sizes | 1.50 x 0.90 x 0.21mm |
| Further measures | Mounting Diameter (Dm): 25.6mm Winding Gear: 0.1mm Stem height (T): 2.0mm Mounting Height (F): 1.4mm |
Origin & References
| Manufacturer | Tissot |
|---|---|
| Country | Switzerland |
| Launch year | 1965 |
| COSC certified | No |
| Signature | 1-2) 1972: 14040850, Chs. Tissot & Fils, Swiss, 17 Jewels; Incabloc
3) 1972: Lanco, Swiss, 17 Jewels; Incabloc
(Tissot 781-1) |
| US import codes |
|
Notes
Remarks: 1965-1972
option: plastic bushings instead of dial screws (for monoshell cases, dial plugged)
without excenter regulator for Langendorf (signature Lanco or CJ, Fig.3)
minor modifications during production periode (cf. Tissot 781-1)
Other data: balance staff: U2480 stem: W2696, W3061 (Seastar Seven) mainspring / battery: 1.20 x 9.5 x 0.105mm
option: plastic bushings instead of dial screws (for monoshell cases, dial plugged)
without excenter regulator for Langendorf (signature Lanco or CJ, Fig.3)
minor modifications during production periode (cf. Tissot 781-1)
Other data: balance staff: U2480 stem: W2696, W3061 (Seastar Seven) mainspring / battery: 1.20 x 9.5 x 0.105mm
Family
Series 781 - suffix -2
in brackets US version
781: manual wind
782: manual wind, date
783 (785): automatic
784 (786): automatic, date
787: manual wind, 24h, date
788 (798): automatic, 24h, date
791: manual wind, no second
792: manual wind, date, no second
793: manual wind, day, date, no second
794 (796): automatic, day, date
884: like 784-2, but polymide bearings
894: like 794, but polymide bearings
suffix -1: new Incabloc, date jumper with long hole for date change by forth- and back setting
suffix -2: modified barrel arbor and -bridge
781: manual wind
782: manual wind, date
783 (785): automatic
784 (786): automatic, date
787: manual wind, 24h, date
788 (798): automatic, 24h, date
791: manual wind, no second
792: manual wind, date, no second
793: manual wind, day, date, no second
794 (796): automatic, day, date
884: like 784-2, but polymide bearings
894: like 794, but polymide bearings
suffix -1: new Incabloc, date jumper with long hole for date change by forth- and back setting
suffix -2: modified barrel arbor and -bridge
Related calibers
Tissot 781
Tissot 781-1
Tissot 782
Tissot 782-1
Tissot 783
Tissot 783-1
Tissot 783-2
Tissot 784
Tissot 784-1
Tissot 784-2
Tissot 785
Tissot 786
Tissot 787
Tissot 788
Tissot 791
Tissot 792
Tissot 793
Tissot 794
Tissot 796
Tissot 798
Tissot 884
Tissot 894
Compatible Parts
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