About DeChronos Watch Repair Kuala Lumpur
Founded on a passion for horology and a commitment to craftsmanship, DeChronos has grown into Kuala Lumpur's most trusted independent watch service centre.
DeChronos was established with a singular mission: to provide watch owners in Malaysia with access to world-class repair and servicing without the inflated prices and long wait times of authorised service centres.
Our Service Centres
We operate three service centres across Kuala Lumpur and Selangor — Berjaya Times Square in KL, Paradigm Mall in Petaling Jaya, and Subang Parade in Subang Jaya. Each centre is equipped with state-of-the-art tools including ultrasonic cleaners, pressure testing equipment, and precision timing machines. We maintain a cleanroom environment for movement work to prevent dust contamination.
Simon Leong
Founder & Master Watchmaker
Simon Leong is the founder of DeChronos and brings over 30 years of hands-on experience in luxury watch repair and restoration. Throughout his career, he has successfully repaired and restored more than 100,000 luxury timepieces, including over 30,000 Rolex watches — making Rolex one of his core areas of expertise.
He specialises in Swiss luxury brands such as Rolex, Patek Philippe, Audemars Piguet, Omega, Cartier, Panerai, IWC, Breitling, and TAG Heuer, and is highly skilled in movement overhaul, polishing, restoration, water resistance testing, and complicated mechanical watches. As a professional luxury watch authentication and verification specialist, Simon is trusted by collectors, watch dealers, and private clients across Malaysia for his precision craftsmanship and reliable service.
Watchmaker Expertise in Verification & Authentication
Beyond routine service, Simon is recognised across Malaysia for his watchmaker expertise in verification and authentication of pre-owned luxury timepieces. He runs our 12-point authentication check covering case weight, Cyclops magnification, movement inspection, serial and reference engraving, rehaut lettering, and bracelet construction — the same checks we use internally before purchasing any pre-owned watch.
Training & Certifications
- 30+ years of hands-on luxury watch repair and restoration experience
- Brand-specific training on Rolex (cal. 3135, 3235, 4130 Daytona, 3255 Day-Date, 2236 Datejust), Patek Philippe (Nautilus, Aquanaut, Calatrava, Grand Complications), Omega Co-Axial (cal. 8800, 8900; Speedmaster 1861/3861), Audemars Piguet, Cartier (cal. 1847 MC), Tudor (MT5602/MT5612), and Grand Seiko (Spring Drive 9R65, hi-beat 9S85)
- Witschi timegrapher calibration — pressure testing equipment rated to manufacturer depths
- Independent authentication training — case-back, movement, and reference verification of luxury timepieces including franken-watch and redial detection
- Vintage restoration specialist — sympathetic restoration preserving originality and patina
Calibres Personally Serviced
Beyond the catalogue-level training, Simon has personally overhauled the following manufacture movements more than 1,000 times each over the past three decades:
- Rolex 3135 (Datejust / Submariner pre-2020)
- Rolex 3235 (Datejust 41 / Submariner 2020+)
- Rolex 4130 (Daytona chronograph)
- Omega Co-Axial 8500/8800 (Seamaster family)
- Longines L888 (Master Collection)
- Grand Seiko 9R65 (Spring Drive)
- ETA 2824-2 and Valjoux 7750 (entry-level Swiss)
Our Promise
- Genuine or OEM-equivalent parts only
- Transparent pricing in Malaysian Ringgit
- 24-month warranty on all repairs
- No sales pressure — service-focused only
The Watchmaker Behind Every Repair
Every DeChronos service is personally overseen by founder and master watchmaker Simon Leong. With over 30 years of experience, he has built the workshop's reputation for craftsmanship, transparency, and trust.
Simon Leong
Founder & Master Watchmaker
Simon Leong is the founder of DeChronos and brings over 30 years of hands-on experience in luxury watch repair and restoration. Throughout his career, he has successfully repaired and restored more than 100,000 luxury timepieces, including over 30,000 Rolex watches — making Rolex one of his core areas of expertise.
He specialises in Swiss luxury brands such as Rolex, Patek Philippe, Audemars Piguet, Omega, Cartier, Panerai, IWC, Breitling, and TAG Heuer. He is highly skilled in movement overhaul, polishing, restoration, water resistance testing, and complicated mechanical watches. As a professional luxury watch authentication and verification specialist, Simon is trusted by collectors, watch dealers, and private clients across Malaysia for his precision craftsmanship and reliable service.