1+ Year Warranty
100% GENUINE
Trusted by 25,000+ happy customers
10+ Years of Online Expertise
Brand: SEIKO
SKU: 310W78HN01
Model(s): Compatible with SGM002J1, SGM002J9, SGM006J0, SGM006J1, SGM006J9, SGM008J0, SGM008J1, SGM008J9, SGM012J0, SGM012J1, SGM012J9, SGM010J0, SGM010J1, SGM010J9, SFT016J0, SFT016J1, SFT016J9, SFT018J0, SFT018J1, SFT018J9, S23296J1, S23296J9, S23298J0, S23298J1, S23298J9, SEL006J1, SEL006J3, SEL006J8, SEL006J9, SEL004J1, SEL004J8, SEL004J9, SEL018J1, SEL018J8, SEL018J9, SZGW0021, SZGW002, SEL001J0, SEL001J1, SEL001J8, SEL001J9, SEL002J0, SEL002J1, SEL002J3, SEL002J6, SEL002J8, SEL002J9, SEL044J0, SEL044J1, SEL044J9, SEL044P0, SEL044P1, SEL044P9, SEL010J0, SEL010J1, SEL010J8, SEL010J9, SEL010P0, SEL010P1, SEL010P9, SEL008J0, SEL008J1, SEL008J8, SEL008J9, SEL008P0, SEL008P1, SEL008P9, SEL068J1, SEL068J9, SEL092J0, SEL092J1, SEL068P1, SEL066J1, SEL066J9, SEL090J0, SEL090J1, SEL066P1, SEL074J0, SEL074J1, SEL074J9, SEL076J1, SEL076J9, SEL072J0, SEL072J1, SEL072J9, SEL070J1, SEL070J9, SEL094J0, SEL094J1, SEL070P1, SDW498P0, SDW498P1, SDW500P0, SDW500P1, SDW502P0, SDW502P1, SDW334P0, SDW334P1, SDW336P0, SDW336P1, SDW338P0, SDW338P1, SDW664P0, SDW664P1, SDW662P0, SDW662P1, SDW662P9, SDW402P0, SDW402P1, SDW402P9, SDW013J1, SDW013J8, SDW013J9, SDW013P1, SDW013P9, SDW018J1, SDW018J8, SDW018J9, SDW018P1, SDW018P9, SDW014J1, SDW014J8, SDW014J9, SDW014P1, SDW014P9, SDW016J1, SDW016J8, SDW016J9, SDW016P1, SDW016P9, SDW233J1, SDW233J9, SDW236J1, SDW236J9, SDW234J1, SDW234J3, SDW234J9, SDW244J1, SDW244J3, SDW244J9, SDW430J1, SDW242J1, SDW242J9, SDW405P0, SDW405P1, SDW405P3, SDW405P9, SDW407P1, SDW407P9, SDW353P0, SDW353P1, SDW353P9, SDW351P0, SDW351P1, SDW351P9, SDW524P1, SDW420P1, SDW420P3, SDW468P1, SDW468P3, SDW418P1, SDW418P9, SDW422P1, SDW408P0, SDW408P1, SDW408P3, SDW408P9, SDW410P0, SDW410P1, SDW410P3, SDW410P9, SDW412P0, SDW412P1, SDW412P9, SDW356P1, SDW356P9, SDW362P1, SDW362P9, SDW358P1, SDW358P3, SDW358P9, SDW360P1, SDW360P3, SDW360P9, SDW470P1, SDW416P1, SDW404P1, SDW352P1, SDW352P9, SDW354P1, SDW354P9, SDX028J0, SDX028J1, SDX028J9,
Case Number(s): Compatible with 5T12-7A20, 5T12-7A29, 5T12-7A39, 5T12-7A3F, 5T12-7A3H, 5T32-6A29, 5T32-6A39, 5T50-6A09, 5T52-6A00, 5T52-6A01, 5T52-6A0A, 5T52-6A10, 5T52-6A18, 5T52-6A19, 5T52-6A20, 5T52-6A28, 5T52-6A30, 5T52-6A38, 5T52-6A39, 5T52-6B20, 5T52-6B29, 5T52-6B2A, 7T32-6E30, 7T32-6E90, 7T32-6E99, 7T32-7A20, 7T32-7A2A, 7T32-7B40, 7T32-7B4A, 7T32-7B80, 7T42-6A49,
Color: Transparent
Material: Hardlex
Size: 31,0 mm
Country of Origin:
HS Code:
This is the original replacement Hardlex Crystal for the SEIKO SGM002J1 - 5T12-7A20
Which SEIKO watches is this Hardlex Crystal compatible with? (see the table below for the complete list of compatible model and case codes / numbers)
This watch Hardlex Crystal is compatible with the following models:
SGM002J1, SGM002J9, SGM006J0, SGM006J1, SGM006J9, SGM008J0, SGM008J1, SGM008J9, SGM012J0, SGM012J1, SGM012J9, SGM010J0, SGM010J1, SGM010J9, SFT016J0, SFT016J1, SFT016J9, SFT018J0, SFT018J1, SFT018J9, S23296J1, S23296J9, S23298J0, S23298J1, S23298J9, SEL006J1, SEL006J3, SEL006J8, SEL006J9, SEL004J1, SEL004J8, SEL004J9, SEL018J1, SEL018J8, SEL018J9, SZGW0021, SZGW002, SEL001J0, SEL001J1, SEL001J8, SEL001J9, SEL002J0, SEL002J1, SEL002J3, SEL002J6, SEL002J8, SEL002J9, SEL044J0, SEL044J1, SEL044J9, SEL044P0, SEL044P1, SEL044P9, SEL010J0, SEL010J1, SEL010J8, SEL010J9, SEL010P0, SEL010P1, SEL010P9, SEL008J0, SEL008J1, SEL008J8, SEL008J9, SEL008P0, SEL008P1, SEL008P9, SEL068J1, SEL068J9, SEL092J0, SEL092J1, SEL068P1, SEL066J1, SEL066J9, SEL090J0, SEL090J1, SEL066P1, SEL074J0, SEL074J1, SEL074J9, SEL076J1, SEL076J9, SEL072J0, SEL072J1, SEL072J9, SEL070J1, SEL070J9, SEL094J0, SEL094J1, SEL070P1, SDW498P0, SDW498P1, SDW500P0, SDW500P1, SDW502P0, SDW502P1, SDW334P0, SDW334P1, SDW336P0, SDW336P1, SDW338P0, SDW338P1, SDW664P0, SDW664P1, SDW662P0, SDW662P1, SDW662P9, SDW402P0, SDW402P1, SDW402P9, SDW013J1, SDW013J8, SDW013J9, SDW013P1, SDW013P9, SDW018J1, SDW018J8, SDW018J9, SDW018P1, SDW018P9, SDW014J1, SDW014J8, SDW014J9, SDW014P1, SDW014P9, SDW016J1, SDW016J8, SDW016J9, SDW016P1, SDW016P9, SDW233J1, SDW233J9, SDW236J1, SDW236J9, SDW234J1, SDW234J3, SDW234J9, SDW244J1, SDW244J3, SDW244J9, SDW430J1, SDW242J1, SDW242J9, SDW405P0, SDW405P1, SDW405P3, SDW405P9, SDW407P1, SDW407P9, SDW353P0, SDW353P1, SDW353P9, SDW351P0, SDW351P1, SDW351P9, SDW524P1, SDW420P1, SDW420P3, SDW468P1, SDW468P3, SDW418P1, SDW418P9, SDW422P1, SDW408P0, SDW408P1, SDW408P3, SDW408P9, SDW410P0, SDW410P1, SDW410P3, SDW410P9, SDW412P0, SDW412P1, SDW412P9, SDW356P1, SDW356P9, SDW362P1, SDW362P9, SDW358P1, SDW358P3, SDW358P9, SDW360P1, SDW360P3, SDW360P9, SDW470P1, SDW416P1, SDW404P1, SDW352P1, SDW352P9, SDW354P1, SDW354P9, SDX028J0, SDX028J1, SDX028J9,
Which SEIKO case numbers is this Hardlex Crystal compatible with? (see the table below for the complete list of compatible model and case codes / numbers)
This Hardlex Crystal is compatible with the following case numbers:
5T12-7A20, 5T12-7A29, 5T12-7A39, 5T12-7A3F, 5T12-7A3H, 5T32-6A29, 5T32-6A39, 5T50-6A09, 5T52-6A00, 5T52-6A01, 5T52-6A0A, 5T52-6A10, 5T52-6A18, 5T52-6A19, 5T52-6A20, 5T52-6A28, 5T52-6A30, 5T52-6A38, 5T52-6A39, 5T52-6B20, 5T52-6B29, 5T52-6B2A, 7T32-6E30, 7T32-6E90, 7T32-6E99, 7T32-7A20, 7T32-7A2A, 7T32-7B40, 7T32-7B4A, 7T32-7B80, 7T42-6A49,
Product Specifications |
|
| Brand | SEIKO |
| Article number | 310W78HN01 |
| Diameter | 31,0 mm |
| Material | Hardlex |
| Color | Transparent |
| Crystal Coating Type | Uncoated |
| Crystal Fitting Type | Waterproof gasket |
| Condition | 100% genuine, brand-new watch part, directly manufactured by Seiko. These are not aftermarket or refurbished components but original factory parts, ensuring a perfect fit and the highest quality |
For the latest product FAQs, please scroll down to the bottom of this product page.
Choose options
WatchPlaza is an independent retailer of watch parts and accessories.
For warranty repairs and official servicing, customers should contact their local authorized dealer or official service center.
Professional installation is recommended. Please verify calibre and reference before ordering.
Choosing a genuine SEIKO replacement part helps preserve fit, function and long-term reliability.
Genuine SEIKO parts can become harder to source over time, especially for older or less common references. When available, choosing the correct original replacement part can help maintain the intended fit and function of the watch.
Why choose a genuine SEIKO Hardlex Crystal ?
✔️ Genuine SEIKO parts are manufactured to meet the brand's original specifications for fit and performance.
✔️ Designed for the listed compatible references. We recommend verifying the calibre, case number and part reference before ordering.
✔️ A genuine original part is generally the most reliable choice when correct fit, finish and intended performance matter.
Availability and sourcing
➤Availability may vary by reference and supply.
➤ Certain watch parts may become limited or discontinued over time, depending on production status and brand availability.
1 to 21 days (varies by shipping method)
30-day return window
Excellent quality
Had trouble getting the item the first time. The dial was returned to holland and had to be shipped out again. BUT they were very communicative and allowed me to add a second hand to the order that was out of stock for my first order. Very pleased. Amazing product, my first real seiko dial!
Beautiful deep teal-green glacial ice dial
The shroud took a little bit over a week to arrive, but it was pretty quick considering that I live in Australia, it came perfectly secured inside the packaging with the original Seiko part number label, super easy to replace and great quality. I hope that they stock them again soon to buy another one just in case I need it in the future.
Tuyệt vời
So I like to mess with beat up watches found on various auction sites. They are often sad and neglected pieces therefore I have several ‘go to’ suppliers that have the hard to find NOS items required to bring the watches back to life. The pic shows all those a bunch of Seiko’s that I’ve found over the last few months that have needed saving … I couldn’t have done this without the input from Watch Plazza. The Pepsi BFK is the one that this bezel was purchased for.
High quality oem dial
My old Seiko tuna 7549 from 1981 needed some love instantly . By missing of Original 7549 parts
I ordered in this shop :
Hand Set for sbbn015
Double Dome hardlex
Glass gasket
Kanji day Wheel for 7c46
With those original parts the 7549 was replaced and improved by an 7c46
Good to have trustful Shops like watchplaza to bring my old tuna back to modern Standard
Cool looking dial. Will definitely order again soon! 🤗
I like this pink matted Apple watchband very much. Glad that I bought STRPZ
This magnetic apple strap made of silicon is high quality. I would recommend it.
High quality and fast shipping!
The quality is better than what I bought before. The seller is highly recommended. The workmanship is +
