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Seiko Prospex 'King Samurai' PADI Automatic Blue Dial Black Silicone Strap Mens Watch SRPG21K1
The Case:
The Seiko Prospex 'King Samurai' SRPG21K1 measures 44mm in diameter and it is made from solid stainless steel. The watch's 'Samurai' nickname derives from the case's sharp, clean-cut, tapered edges that look as if they have been sliced off by a 'Katana' sword. The powerful steel case has been brushed, which provides the watch with a lustre that also helps to ensure the longevity of the timepiece.
The 'King Samurai' is different from the standard 'Samurai' in that it has a ceramic bezel instead of a stainless steel bezel. The benefit of having a ceramic bezel is that they provide greater durability and scratch resistance than a stainless steel bezel, this is why it is a material more commonly associated with luxury watches. The bezel is uni-directional and it is presented in black and blue. A 60-minute scale is displayed on the bezel, which allows the wearer to keep track of time spent under water. The side of the bezel has been deeply etched with a 'Clous De Paris' pattern which enables optimum grip, whilst also bestowing the watch with a contemporary feel. A luminescent pip is situated at the 12 o’clock mark which makes it easier for the 60-minute scale to be read underwater.
A screw-down crown is situated besides the 3 o'clock mark on the side of the case, it is protected by a tapered crown guard.On the back of case a stainless steel screw down case back has been engraved. On the front sapphire crystal glass has been applied for its scratch resistant qualities, as it is second only to diamond in its hardness. The sapphire crystal glass has been treated to an anti-reflective coating on the inner surface, which eliminates the threat of reflections from light.
The Dial:
The black dial features a deeply pressed PADI earth patterned design, which gives the watch a unique textured appearance. The simplistic layout of the dial ensures optimum legibility and avoids the risk of any complications. The dial consists of bold hour markers and an equally bold handset that have both been filled with a luminescent material, allowing the wearer to read the time in the dark. The minute hand has a striking blue frame that complements the dashes of blue on the bezel. The pointed seconds hand also ensures that the time is always accurately displayed. Additional useful features present on the dial include a cyclops date window that replaces the 3 o'clock marker and 60-minute scale chapter ring. The Seiko logo is presented in white beneath the 12 o’clock marker.
The Bracelet:
Made from black silicone, the bracelet of the Seiko Prospex King Samurai accentuates the ruggedly athletic aesthetic of this watch. Comfortable in all scenarios, silicone is a smart choice for the buckle of such a high-performance piece. With a buckle closure, there is no chance of this watch slipping away and comfort is guaranteed.
The Functions:
Seiko’s exclusive 4R35 automatic movement powers this timepiece. It is a self-winding calibre with manual-winding capacity and a hacking-seconds features. This movement has a 41 hour power reserve and it consists of 23 jewels and it beats at 21,600vph. It boasts a water resistance of 200 metres, making it suitable for diving.
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UK Delivery
| Selling Price | Royal Mail 48 (Tracked) |
Royal Mail 24 (Tracked & Signed) |
Special Delivery Next Day (Mon – Fri) |
Special Sunday Delivery (Before Sat 12pm) |
Royal Mail Special Delivery by 1pm |
|---|---|---|---|---|---|
| £0 to £99.99 | FREE | £4.99 | £7.99 | £7.99 | £9.99 |
| £100 to £499.99 | N/A | FREE | £7.99 | £7.99 | £9.99 |
| £500 or more | N/A | N/A | FREE | £7.99 | £9.99 |
We know your order is important to you, so we use Royal Mail’s tracked delivery service on all UK orders.
We also offer Royal Mail Special Delivery service, which for an additional fee offers guaranteed delivery the next day before 1pm.
*Royal Mail Tracked 24 and Royal Mail Tracked 48 services are 98% accurate but not guaranteed.
Orders placed before 5pm (Monday–Friday) are dispatched the same day. Orders placed on Saturday or Sunday are dispatched the following Monday.
International Shipping & Duties (Delivered At Place – DAP)
We’re pleased to offer worldwide delivery with fully tracked and insured shipping.
How international orders work
All international orders are shipped on DAP (Delivered At Place) terms. This means:
- The price you pay at checkout covers your goods and international shipping only.
- WatchNation does not collect or charge any overseas sales tax, import VAT, or customs tariffs (duties).
- When your order reaches your country, local customs authorities may apply:
- Import VAT (value-added tax),
- Tariffs or customs duties (import taxes based on product category and value), and
- Handling or clearance fees from the courier.
These charges are set by your country’s customs authority and are payable by you before delivery.
You’ll be contacted directly by DHL with a secure link to pay any applicable charges. Once cleared, your parcel will be released and delivered promptly.
Estimated delivery times (after dispatch)
- European Union: approximately 2–5 working days
- Rest of World: approximately 5–7 working days
Customs processing times vary by country and may extend delivery slightly.
If import charges, tariffs, or duties are not paid
If local charges are unpaid or delivery is refused, the shipment will be returned to us. In this case, we will refund your order minus the outbound shipping cost and any return or customs fees billed to us by the carrier.
Estimating import costs
Import VAT and duty rates vary by country. You can check estimated import taxes and tariffs by contacting your local customs authority or using your government’s online import calculator.
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Frequently Asked Questions
Yes — we are an Authorised Dealer for every brand we sell. All watches come with an official box, papers, and a full manufacturer’s warranty.
Every watch includes a manufacturer warranty. You’ll find more warranty info listed in the product description.
Orders placed before 5pm (Mon–Fri) are dispatched the same day. Order before 12pm on Sat for same-day dispatch. Free UK delivery is available on all orders, and tracking details are provided once shipped.
Yes — you have 30 days from delivery to return or exchange your item, provided it’s unused and in its original packaging.

