Hatton Garden, London Specialist Seiko Watch Repair
From iconic 1970s "UFO" chronographs and heritage "Captain Willard" divers to the latest King Seiko and Astron editions, our independent workshop specialises in precision repair, maintenance, and full mechanical restoration. Visit our specialist workshop in person or send your Seiko watch to us by post.
Seiko Excellence Expert Seiko Repairs & Servicing: Our Process
Whether you own a vintage "Pogue" pilot’s watch, a modern Prospex Sea-series, or a high-beat Grand Seiko, our independent workshop is built on a foundation of transparency, craftsmanship, and technical rigour to ensure your watch's performance is preserved.
Getting Your Watch to Us
You’re always welcome to pop into our Hatton Garden watch repair shop in person, or, if it’s easier, send your Seiko to us by post. For peace of mind, we recommend using a tracked and fully insured service so your Turtle, Tuna, or Alpinist arrives safely at our bench for evaluation.
Diagnostic & Quotation
Once on the bench, your Seiko undergoes a rigorous technical evaluation. We provide a full diagnostic of the movement’s health, required components, and precise lead times. Before a single screw is replaced, you’ll receive a transparent, no-obligation quote tailored specifically to your watch’s Calibre.
Seiko Quality Control and Returns
From ISO-standard water resistance to high-precision movement regulation, your Seiko must pass our most stringent benchmarks before it earns our 12-month guarantee. Whether you collect in person from our Hatton Garden workshop or opt for secure, insured delivery, your timepiece returns restored, resilient, and ready for the long haul.
Servicing & Authentic Seiko Parts
Stay informed with automated updates as your watch moves through our London workshop. From regulating a Hi-Beat movement or Spring Drive to refinishing a brushed steel case, we use only genuine components and Japanese-standard tools. Our watchmaker's priority is to ensure your Seiko is returned performing to original factory specifications.
What Our Clients Say about Us
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“So pleased with the service I received after visiting 3 different watch repairers to have a bespoke strap fitted to my collectable watch. All said it couldn’t be done. AMJ were friendly, helpful and quick. They fitted the strap within 5 minutes and charged a very reasonable price. Highly recommended.”
⭐⭐⭐⭐⭐ | Victoria Tischler | Google Business Profile
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"Top marks for AMJ watch repair for quality of work, customer service, and old-school decency! Not only did they do a stellar job (three different watches), but they were also very kind and generous when, due to my miscommunication, revisions were needed the following day. Highly recommended!"
⭐⭐⭐⭐⭐ | Joséphine Dunn | Google Business Profile
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"Incredible watch repair shop, very friendly and knowledgeable. My watch would not calibrate, and I believed it was a battery issue. The team and AMJ reviewed it and emailed me to say it’s ready to collect. Honest and reliable, and I couldn’t recommend them highly enough."
⭐⭐⭐⭐⭐ | Viran Patel | Google Business Profile
Get an Instant Estimate
Need a professional repair or routine service? Our watchmakers will provide you with a detailed technical evaluation of your Seiko watch.
Speak to Our Seiko Specialists
Call us directly to discuss your watch's specific needs—from battery replacements and pressure testing to full mechanical overhauls and restorations.
Visit Our Seiko Repair Shop
Located in London’s historic jewellery district, Hatton Garden. We offer "while-you-wait" services for minor adjustments and expert consultations.
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Our Seiko overhaul begins with a complete disassembly of the movement, from the Magic Lever winding system to the Diashock units. Each component undergoes a rigorous ultrasonic cleaning cycle to remove aged lubricants and microscopic debris. Our watchmakers then meticulously reassemble the calibre (such as the 7S26, 6R15, or 8L35), applying manufacturer-specified oils to critical friction points. This ensures your Seiko returns with the same legendary "tool watch" reliability it had the day it left Japan.
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Our pressure testing is in strict accordance with ISO 6425 standards—the benchmark for Seiko Prospex divers. Whether it’s an SKX, a "Turtle," or a 1000m "Tuna," we verify the integrity of the L-shaped gaskets and seals using professional Swiss-standard testing equipment. We provide a physical pressure-test certificate as documented proof of your watch's depth rating.
Deep Dive: Understanding Watch Water Resistance & How We Test It
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While many international service hubs take months, our independent workshop in Hatton Garden typically offers a turnaround of 3–4 weeks for a full mechanical service, depending on the availability of specific movement components.
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Yes. We prioritise the use of authentic Seiko components to safeguard your timepiece’s mechanical integrity and resale value. For total transparency, we return your replaced, worn parts in a sealed bag so you can verify exactly what was replaced during the service.
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We specialise in vintage Seiko restoration, particularly for iconic chronographs and early divers. Leveraging our deep-rooted connections within Hatton Garden, London’s historic jewellery district, we source "period-correct" components—from Hardlex crystals to original calibre wheels. Our goal is to ensure your watch remains historically accurate and mechanically sound.
Learn More: Common Repair Challenges for Vintage Seiko Models
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To preserve the iconic geometry of Seiko cases, we utilise precision refinishing techniques. For high-end models like Grand Seiko or King Seiko, we are careful to maintain the Zaratsu-style flat surfaces and sharp bevels, preventing the "rounded" look caused by aggressive over-polishing.
Expert Guide: Should You Polish Your Seiko? Impact on Value & Aesthetics
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Every Seiko service and mechanical repair performed at our workshop is backed by a comprehensive 12-month warranty, covering all internal workmanship for your total peace of mind.
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Seiko automatic movements are famous for their "workhorse" nature, but sometimes require regulation. We can calibrate your movement on a digital timing machine to ensure it is performing within its original factory tolerances (e.g., +25/-15 seconds per day for a 4R36).
Your Seiko Repair Questions Answered
Find clarity on our Seiko-specific repair standards, service timelines, and the precise measures we take to preserve your Prospex case and mechanical movement throughout its journey.
Honouring Japanese Horology Seiko Servicing: Preserving Engineering Excellence
From movement overhauls to restorations, we combine traditional horology with modern Japanese precision. Explore our specialised services below to see how our watchmakers protect the integrity, value, and mechanical performance of your Seiko timepiece.
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Seiko Hardlex & Sapphire Crystal Replacement
Chipped or scratched glass? We stock genuine scratch-resistant Hardlex crystals and vintage-correct acrylic for heritage "Bullhead" and "UFO" chronographs. For modern divers, we offer Sapphire upgrades to ensure your dial remains protected and crystal clear during daily wear or deep dives.
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Seiko Case & Bracelet Refinishing
Our in-house polishing specialists use multi-stage techniques to remove surface scuffs while preserving the sharp, iconic geometry and "Zaratsu-style" bevels found on King Seiko and high-end Prospex cases.
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Seiko Movement Servicing
Our watchmakers perform a complete ultrasonic strip-down, clean, and lubrication of 7S26, 4R36, and 6R15 calibres using manufacturer-specified oils. Regular maintenance is essential to safeguard the accuracy and longevity of your "Turtle," "Samurai," or "Monster" diver.
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Vintage Seiko Restoration
Specialising in the restoration of rare and vintage Seiko models, from the world-first 6139 automatic chronographs to the early 150m "Silver Wave" divers. We source period-correct components to ensure your watch remains historically accurate, water-resistant, and mechanically sound.
Our BlogYour Seiko Maintenance & Horology Guide
Whether you’re a seasoned collector of vintage "Willard" divers or a first-time Presage owner, our blog is your dedicated resource for preserving the precision of your timepiece. We dive deep into the world of Seiko-specific horology, from movement regulation to heritage restoration.
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Watch Polishers Guide to Seiko Case Restoration
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Vintage Seiko Restoration: Preserving Your Investment
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Accredited vs Independent Seiko Watch Repair Centres
