Seiko Westminster Chiming Clock Movement (with Pendulum drive)

This Seiko Westminster Chiming Quartz Movement with Pendulum drive is the exact pendulum movement I use for my own professional clock conversions, bringing traditional mechanical chiming clocks back to life with the visual presence of a pendulum and the reliability of modern quartz operation. It delivers authentic Westminster or Whittington chimes, quarter-hour melodies, automatic night silence, and smooth pendulum motion — all without the upkeep of clockwork.

Please note – this unit does NOT come with a pendulum – you need to source your own, or re-use the original.

>> Scroll down to listen to a couple of VIDEOS showing these chimes in action

This Seiko Westminster chiming movement with pendulum is a premium quartz replacement designed for wall and longcase-style clocks that require traditional quarter-hour melodies, an hourly strike, and a functioning pendulum — without the complexity, wear, and maintenance of mechanical clockwork.

This is the identical pendulum movement I use for all customer clockwork-to-quartz conversions, including those featured on ClocksUpcycled.co.uk. If you are converting a mechanical chiming clock yourself and want to retain both the sound and presence of a traditional pendulum clock, this is the same proven solution I fit in my own professional restorations.

NOTE – I supply ONLY the Euro Fit (EF) versions of this movement. This makes it far easier to reuse or adapt original clock hands when converting a mechanical movement to quartz.

If you are converting a clockwork clock and want to retain your ORIGINAL hands — as I always do — you may need to adapt them to suit the EF shaft. You can either do this yourself or SEND ME your existing hands and I will professionally adapt them for quartz use. The cost of this hand adaptation service is £35, including return delivery.

The movement offers a dual chime option, allowing you to select either the classic Westminster melody or the Whittington chime. It follows a 4 × 4 chime pattern, playing a partial melody every 15 minutes, a full melody on the hour, and then striking the hour count — preserving the rhythm and character of a traditional chiming pendulum clock.

A built-in selective automatic night shut-off allows you to silence the chimes overnight, while the manual volume control lets you fine-tune the sound level to suit your room. The step-seconds quartz motion provides reliable, accurate timekeeping, while the pendulum adds visual movement and traditional charm.

Powered by a single MN1400 (C-cell) battery, the movement is efficient and dependable for everyday use. Unlike many suppliers, I include the speaker as standard, complete with speaker wires and all required fittings — making installation straightforward.

Whether you’re restoring a vintage pendulum clock, converting a worn mechanical movement, or building a high-quality chiming clock from scratch, this Seiko pendulum unit delivers the ideal balance of traditional appearance and modern reliability — and it’s the same solution I confidently install for my own customers.

Technical Specifications

Chime, Strike & Pendulum

• Dual chime selection: Westminster or Whittington
• Quarter-hour chiming with 4 × 4 melody pattern
• Full melody on the hour followed by hourly strike count
• Selective automatic chime silencer (night shut-off available)
• Adjustable volume control
• Functional pendulum operation

Pendulum Compatibility

• Allowed pendulum length: 120–350mm
• Allowed pendulum weight: 40–60g

Hands Compatibility

• Maximum minute hand length: 160mm (max weight 5g)
• Maximum seconds hand length: 130mm (max weight 2g)
• Step-seconds motion

Power

• Requires 1 × MN1400 (C-cell) battery

Included

• Movement
• Dial fixing hardware
• Speaker (included as standard)
• Speaker wires

Movement Dimensions

• 112 × 82 × 28mm (H × W × D)

Shaft Measurement

• Shaft length measured from movement front to centre of shaft tip

Hand Collet Dimensions – Euro Fitting (EF)

• Minute: 3.5 × 2.8mm
• Hour: Ø 5.00mm

Setup

• Full setup instructions for this Seiko Quartz Chiming Westminster movement are available in PDF format here

Listen to the Seiko Westminster Chimes – VIDEO

This is an example of a clock I converted to Seiko Chiming quartz for a customer in 2024

 

 

How to get the Strike on the O’Clock precisely – VIDEO

This is how I tune this movement so it strikes precisely at the O’CLOCK position.