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Seiko Prospex ‘Tortoise’ Compass Automatic Green Dial Steel Bracelet Mens Watch SRPH15K1
Seiko Prospex Tortoise Thus watch shape is known as a ‘Tortoise,' inspired by the popular diving watch shape nicknamed by Seiko fans as the ‘Turtle’ because of its shell-like profile. Powered by the 4R34 Automatic movement, with 200m water resistance, highly visible indices and screw-down crown at 4 o’clock, this resilient timepiece is designed for stylish practicality. Seiko Prospex watches are designed for sports lovers and adventure seekers in the water, in the sky or on land – and are robust for everyday wear, whatever the environment. Since launching Japan’s first diver’s watch in 1965, Seiko’s innovative watchmaking has changed global dive watch standards.
The Case:
Seiko Prospex Mens SRPH15K1 ‘Tortoise’ Automatic Stainless Steel Mens takes its name from its cushion shaped case, which resembles the shell like profile of a Tortoise. The case is made from stainless steel and it measures 42.4mm in diameter. On top of the case there is a striking green unidirectional rotating bezel, which displays both a 60-minute scale and the four cardinal directions (N, E, S and W). The bezel walls are coined, which allows for greater grip and therefore more easily rotated. On the side of the case there is a recessed screw-down crown at 4 o’clock. This is a feature which is commonly found on dive watches, as it allows the watch to sit comfortably on the wrist without the crown digging in. Sapphire crystal glass provides the watch with superlative levels of protection against scratches and shattering.
The Dial:
The design of the bold sunray green dial is uncomplicated and atypical of a classic dive watch. The simplistic layout of the dial ensures maximum legibility, around the edge of the dial there are highly visible baton-style indices which have been filled with a Seiko’s lumibrite material which allows the dial to be read in the dark. A date-display window is nestled in between the 4 and 5 o’clock marker on the dial. Surrounding the hour markers is a 60-minute scale, which is located on the dial’s chapter ring. Extending out from the centre of the dial are the syringe (minute) and arrow (hour) hands, which have a silver frame and are also filled with lumibrite. The second hand is presented in a gold tone, which is complementary to the green tones of the dial.
The Bracelet:
The bracelet is made from stainless steel and it comes fashioned in a classic three-link oyster style. The simplistic design of the oyster bracelet was first introduced by Rolex in 1948 and it has since been closely associated with sports watches, due to their utilitarian character that ensures that the bracelet remains secured to the wrist during sporting activities. The three fold clasp, with secure lock, also helps to ensure that the watch remains securely fastened to the wearer’s wrist.
The Functions:
Seiko’s 4R35 automatic movement which has a power reserve of 41-hours. It consists of 24 jewels and it has an accuracy of +45/-35 seconds per day. It also offers a hand winding feature, as well as a hacking feature. It is water resistant up to 50 metres, which permits the wearer to wear the watch when snorkelling.
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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 14 days from delivery to return or exchange your item, provided it’s unused and in its original packaging.

