Seiko 3027 4MZ (No Returns)

Genuine Seiko replacement part designed for specific kinetic and solar-powered Seiko movements. Supplied with the correct pre-attached clip for secure and accurate installation.

✅ Check the Movement Calibre – Not the Cell Number

To select the correct capacitor, always verify the calibre number stamped on the movement inside the watch.
Do not use the number printed on the cell, as many capacitors share the same cell model, but differ in clip configuration, which is critical for compatibility.

⚡ Important Charging Information

New capacitors are shipped with very little charge (similar to early-generation mobile phones). They must be charged after installation:

• Solar watches: Charge by placing the watch in direct sunlight, ideally on a windowsill.

• Kinetic watches: Charge through regular wear or by using a kinetic watch charger.

It may take several hours or days to reach a full charge initially.
If the watch fails to hold charge, the issue is likely due to a faulty movement or charging system, not the capacitor.

⚠️ No Returns Accepted on capacitors due to the sensitive nature of electronic parts and potential handling damage.

🔧 Compatible With the Following Calibres:

• 3M62 / 3M62A

• 4M21 / 4M21A

• 4M22 / 4M22A