Prospex Sumo SPB101
The Prospex Sumo SPB101 by Seiko combines sporty presence with an everyday-friendly size. The 45 mm stainless steel case houses the Seiko 6R35 calibre (automatic, approx. 70 hrs power reserve). Sapphire crystal and 200 m water resistance put the watch into practical context; it is worn on the stainless steel bracelet in everyday life and outdoors. Sporty in character, yet versatile to combine.
All technical data comes from manufacturer information and is checked against manufacturer or retailer pages before inclusion. The editorial rating is our assessment of technology, build quality and value for money in the class, not a lab test. The guide price is based on the recommended retail price; you can always see the current price in the shop. More about how we work →
The specs of the Prospex Sumo SPB101 in detail
Movement, case and features decide how a watch performs in everyday life. Here the key data of the Prospex Sumo SPB101 are gathered clearly in one place, as in the manufacturer's data sheet.
Suits you if...
Our assessment based on technology, build quality, versatility and value for money in the respective class. We will show genuine user reviews as soon as they are available.
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Frequently asked questions about the Prospex Sumo SPB101
Here you will find short, clear answers about the Prospex Sumo SPB101 by Seiko. The details help you assess size, movement, water resistance and price. That way you can decide more quickly whether the watch suits you.
How big is the Prospex Sumo SPB101?
The Prospex Sumo SPB101 measures 45 mm in diameter and is 12.9 mm thick. That gives the watch a strong presence on the wrist; what matters is that the lugs do not extend beyond your wrist.
Which movement powers the Prospex Sumo SPB101?
The Prospex Sumo SPB101 is powered by the Seiko 6R35 calibre with automatic winding and about 70 hours of power reserve. It winds itself via the rotor as you wear it.
Is the Prospex Sumo SPB101 water resistant?
The Prospex Sumo SPB101 is pressure tested to 200 m and is therefore suitable for swimming, snorkelling and most dives. The metre rating is a test pressure and not a diving depth.
How much does the Prospex Sumo SPB101 cost?
The Prospex Sumo SPB101 (Ref. SPB101J1 · 45 mm) has a guide price of approx. €870.00, based on the recommended retail price. You can find the current daily price directly at our partner shop Amazon.de.
For which occasions is the Prospex Sumo SPB101 suitable?
The Prospex Sumo SPB101 suits everyday life, outdoors and sport above all. This follows from its sporty look, its size and its sapphire crystal and stainless steel bracelet.
Which watches are similar to the Prospex Sumo SPB101?
Kamasu by Orient, Prospex Turtle SRPE93 by Seiko and Mako II by Orient go in a similar direction. They share the watch type or a related concept and are worth comparing before you buy.
Related guides
More guidance on the Prospex Sumo SPB101: these guides go deeper into watch type, technology and buying decisions and help you compare it with other models.