ETA 7750-434 Click Spring

Quantity	Discount (%)	Price
1 - 2	—	$3.00
3 - 4	5 %	$2.85
5 - 9	7 %	$2.79
10 - 14	10 %	$2.70
15+	15 %	$2.55

Quantity

Discount (%)

Price

1 - 2

—

$3.00

3 - 4

5 %

$2.85

5 - 9

7 %

$2.79

10 - 14

10 %

$2.70

15+

15 %

$2.55

Product Description

Quantity	Discount (%)	Price
1 - 2	—	$3.00
3 - 4	5 %	$2.85
5 - 9	7 %	$2.79
10 - 14	10 %	$2.70
15+	15 %	$2.55

Genuine ETA 7750-434 Click Spring, Made in Switzerland, brand new — the original factory spring component for the ETA/Valjoux 7750 chronograph movement’s winding mechanism. Precisely engineered to apply spring tension that keeps the click in positive engagement with the ratchet wheel, the Click Spring prevents the mainspring from unwinding and ensures reliable crown winding resistance during manual winding. An essential replacement part for restoring a fatigued or broken click spring during movement service. Original ETA part — the professional’s choice for genuine winding mechanism restoration.

Features & Function

Genuine ETA 7750-434 — original Swiss-made factory part, brand new, authentic, part number 7750-434

Click spring — applies spring tension to keep the click in positive engagement with the ratchet wheel during winding

Prevents mainspring unwinding — ensures the mainspring stays wound and does not unwind when the crown is released

Reliable winding resistance — provides the positive tactile feel and resistance when manually winding the watch

Original factory quality — exact spring tension and dimensional specifications for perfect fit in the ETA/Valjoux 7750 movement

Specifications

Parameter	Value
Brand	ETA (Swatch Group)
Part Number	7750-434
Component	Click Spring
Compatibility	ETA/Valjoux 7750 Chronograph Movement
Origin	Made in Switzerland
Type	Original Factory Part (Genuine ETA)
Function	Spring tension to keep click in positive ratchet engagement; prevents mainspring unwinding
Packing	Original Packing
Condition	Brand New / Genuine ETA

Parameter

Value

Brand

ETA (Swatch Group)

Part Number

7750-434

Component

Click Spring

Compatibility

ETA/Valjoux 7750 Chronograph Movement

Origin

Made in Switzerland

Type

Original Factory Part (Genuine ETA)

Function

Spring tension to keep click in positive ratchet engagement; prevents mainspring unwinding

Packing

Original Packing

Condition

Brand New / Genuine ETA

Applications

Replacement of fatigued, broken, or weakened Click Spring in the ETA/Valjoux 7750 movement

Repair of winding mechanism failures: crown slipping during winding, mainspring unwinding, or loss of winding resistance feel

Repair of click mechanism: click not engaging properly or clicking sound absent

Professional movement service, overhaul, and chronograph restoration

Certified watchmaker and service center parts supply

FAQ

Q1: Is this a genuine ETA part?
A: Yes — this is a genuine ETA 7750-434 Click Spring, Made in Switzerland, brand new. It is an original factory part from ETA (Swatch Group), the world’s leading movement manufacturer. Not a generic or replica part.

Q2: How do I confirm this part fits my movement?
A: Confirm your movement is an ETA/Valjoux 7750 chronograph. The part number 7750-434 is the specific Click Spring for this movement. Common brand applications include: IWC Portugieser Chronograph, Omega Speedmaster (older 7750 variant), Tag Heuer Monaco, Breitling Navitimer, and many other chronographs using the Valjoux/ETA 7750 platform.

Q3: What does the Click Spring do?
A: The Click Spring (7750-434) is a small spring that applies tension to the click — the click is the lever that engages the ratchet wheel (the notched wheel that the crown turns to wind the mainspring). The spring pushes the click into the ratchet wheel’s teeth, creating the characteristic clicking sound as you wind the watch and preventing the mainspring from unwinding when you release the crown. Without a functioning click spring, the mainspring would unwind immediately when you stop winding, and the watch would lose all power.