The Seiko SPB077 and SPB079 are modern interpretations of Seiko’s 1968 automatic diver, not the separate limited-edition re-creation. The main choice is configuration: SPB077 pairs a black bezel with a stainless-steel bracelet, while SPB079 uses a blue bezel and silicone strap. Their published movement, case dimensions and water-resistance rating are otherwise the same.
What is the difference between the SPB077 and SPB079?
Seiko announced both watches in March 2018. The company described them as modern-styled models that echo the 1968 design, with a thinner bezel and more contemporary hands. Its historical overview distinguishes them from the limited-edition 1968 re-creation, calling the SPB077 and SPB079 modern re-imaginings instead.
The two references share their core specifications; the most visible and practical distinction is the supplied bracelet or strap and its corresponding bezel color.
| Model | Bezel | Supplied bracelet or strap | Listed weight |
|---|---|---|---|
| SPB077 | Black | Stainless-steel bracelet with secure-lock clasp, push-button release and extender | 184.0 g |
| SPB079 | Blue | Silicone band | 120.0 g |
The weights and configuration details are Seiko’s published specifications for the UK models; they do not establish how either watch feels on a particular wrist. The bracelet version is 64 g heavier by the listed figures. Seiko lists 20 mm lug spacing for both, but that measurement alone does not confirm aftermarket strap fit, end-link fit or a replacement strap’s suitability for diving.
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- Classic Style: rotatable bezel function with 120° unidirectional rotation, Japanese quartz movement with date function, enlarged date window at 3 o'clock, rotatable bezel, can be used as a chronograph or second time zone timer.
- Dimensions: Case Diameter: 41 mm; Case Length: 48 mm; Case Thickness: 13 mm; lugs width : 20 mm; Watch weight: 163 g; Watch length: 220 mm
- Detailed Components: screw-down crown, mineral glass dial window, stainless steel bracelet, adjustable bracelet (included tool to remove the bracelet links), security folding
- 200M Waterproof: It can protect your watch, you can use it underwater in rainy days with peace of mind
- Easy to Read Face :Simple dial design, easy to read the time, with luminescent function, the time can be clearly seen in the dark place
Are the SPB077 and SPB079 different in size or core specifications?
Seiko’s current UK product pages give both models a 44.0 mm case diameter, 51.0 mm lug-to-lug measurement and 12.7 mm thickness. Both have a stainless-steel case with super-hard coating, sapphire crystal with an inner-surface anti-reflective coating, and LumiBrite on the hands and indices. These are manufacturer specifications, not independent measurements.
Each page also lists a unidirectional rotating bezel, screw-down crown and screw case back. Both are rated Diver’s 200 m / 660 ft by Seiko. That is the published water-resistance rating, not evidence of an independently conducted dive or water-resistance test.
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- DIVER-INSPIRED DESIGN — Inspired by the sea, the MDV-106G is styled after classic dive watches and delivers 200-meter water resistance at an unbeatable price point. The black resin band and stainless steel case give it a classic look, while the anti-reverse rotary bezel adds authentic dive-watch character.
- STAINLESS STEEL CASE WITH SCREW-LOCK CROWN & CASEBACK — The MDV-106G features a stainless steel case and a reliable screw-lock crown for enhanced water resistance protection. Screw-down crown and screw-lock caseback work together to keep the movement sealed and secure during water activities — a construction standard found on dive watches far above this price range.
- LARGE FLUORESCENT HANDS & INDICES FOR INSTANT READABILITY — The dial features hands and hour indices with large fluorescent areas for easy reading in low-light and underwater conditions. The clean 3-hand analog layout with date display at 3 o'clock keeps the dial uncluttered and immediately legible at a glance.
- 44MM STAINLESS STEEL CASE | 22MM LUG WIDTH | MINERAL GLASS — The case measures 44mm in diameter, 12mm in height, with a 49mm lug-to-lug length and a standard 22mm lug width — making strap upgrades effortless with a vast range of aftermarket options. Mineral glass protects the dial from everyday scratches and impacts.
- 3-YEAR BATTERY & 200M WATER RESISTANCE — Powered by an SR626SW battery with an approximate 3-year life, the case measures 49.5 × 46.3 × 12.1mm and weighs 92 grams. At 200 meters of water resistance, the Duro is versatile and suitable for all situations — whether in the water, hiking, running, or at the office.
What movement is in the Seiko SPB077?
The SPB077 and SPB079 both use Seiko calibre 6R15, an automatic movement that also supports manual winding. Seiko lists 23 jewels, a date display, stop-seconds function and approximately 50 hours of power reserve. The 2018 announcement additionally specifies 21,600 vibrations per hour.
Seiko’s UK product pages state an accuracy specification of +25 to -15 seconds per day. This is the manufacturer’s stated range, not a measured result for an individual watch or a guarantee of its real-world timekeeping.
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- DURABLE STAINLESS STEEL CASE WITH ROTATING BEZEL: The Casio MDV106 Series features a stainless steel case and screw-down crown, ensuring durability and reliability. The rotating bezel allows for easy time tracking, making it a practical choice for various activities. The sleek analog display with luminous markers enhances visibility.
- 200M WATER RESISTANCE FOR VERSATILE USE: Designed for water resistance up to 200 meters (660 feet), this watch is suitable for daily wear, outdoor activities, and water-related environments. The screw-down caseback and crown provide an extra layer of security, making this a reliable timepiece for various conditions.
- CLEAR ANALOG DISPLAY WITH DATE FUNCTION: The three-hand analog display with hour, minute, and second hands ensures precise timekeeping, while the date display at the 3 o’clock position allows for quick reference. The bold markers and luminous hands enhance readability, making it easy to check the time in various lighting conditions.
- STAINLESS STEEL BAND WITH SECURE CLASP: The stainless steel band with a one-touch 3-fold clasp provides a secure and adjustable fit for all-day comfort. Designed for durability, the stainless steel material offers a polished, stylish look, making it suitable for both casual and professional settings.
How do the watches relate to Seiko’s 1968 diver?
Seiko’s 22 March 2018 announcement says the SPB077 and SPB079 echo the 1968 original but use a modern style, including a thinner bezel and more contemporary hands. The company presented them alongside, but separately from, the limited-edition 1968 re-creation. Seiko’s historical page makes the distinction explicit: it calls these two models modern re-imaginings rather than recreations.
That distinction matters if you are shopping specifically for a faithful re-creation. The SPB077 and SPB079 draw on the 1968 design, but Seiko positioned them as modern interpretations, not as that limited-edition re-creation.
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- Precision Timekeeping: Powered by a VH31 sweep seconds quartz movement, the men watches offers accurate and reliable timekeeping, ensuring you're always on time.
- Sapphire Crystal: The watch face is protected by a scratch-resistant sapphire crystal with AR coating, ensuring long-lasting clarity and a polished look even with regular use.
- Water Resistance: Water-resistant up to 100 meters (330 feet), this timepiece is can meet daily waterproof,such as washing hands, rain, swimming(please tighten the crown when going into the water). It is not recommended to wear the watch while diving or taking a hot shower.
- Luminous Hands and Markers: The quartz watch features BGW9 blue luminous hands and markers, ensuring easy readability even in low-light conditions, perfect for nighttime or dim environments.
- Comfortable Fit: The dive watches comes with a black nylon strap, it is lightweight and soft, with excellent breathability for all-day wear. There are multiple adjustment holes to fit most wrist sizes.
What did the SPB077 and SPB079 cost at launch?
Seiko’s March 2018 announcement gave approximate European recommended retail prices of €1,100 for the SPB077 and €900 for the SPB079, with availability expected from July that year. These are launch-era figures, not current prices. Seiko’s cited UK product pages do not establish current street pricing or availability outside their regional presentation.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What can—and can’t—be concluded from the published information?
The official specifications allow a direct comparison of configuration, listed weight, dimensions, movement and rated water resistance. They do not establish comfort, wrist fit, in-use accuracy, lume duration, underwater performance or how the watches compare after hands-on wear. For those questions, a published specification should not be mistaken for a test result.
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Quick Recap
Best Value
- BUILT FOR TOUGH, ACTIVE DAYS Handle outdoor routines and daily wear with confidence. 42mm 316L stainless steel case delivers strength and durability, making it a reliable rugged option for men who need performance in real-world conditions.
- RELIABLE TIME YOU CAN TRUST DAILY Stay on track from work to weekend activities. Swiss-made Ronda 515 quartz movement delivers accurate, consistent timekeeping you can depend on throughout your day.
- DESIGNED FOR WATER AND ACTIVE USE Move from daily wear to time in the water with ease. Unidirectional rotating bezel helps track time during swimming and outdoor activities, making it a practical dive watch for active lifestyles.
- READY FOR SWIMMING AND WATER EXPOSURE Built for everyday wear and ready for swimming or time in the water. Water resistance up to 100M (330FT) supports underwater use and active environments without added stress. The best gift for an active man anyday.
- PRACTICAL DESIGN FOR EVERYDAY CONVENIENCE Keep your day organized without distraction. Date display adds quick access to daily information while maintaining a clean, easy-to-read dial for regular use.
- Seiko SPB077J1 UK product page
- Seiko SPB079J1 UK product page
- Seiko’s 22 March 2018 launch announcement
- Seiko’s 1968 Automatic Diver’s re-creation history page
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
