Seiko Prospex Antarctica Tuna 'Save the Ocean' Mens Automatic movement watch SRPH77K. Case size 43.2mm.

The SRPH77K1 timepiece is inspired by the landscape of the world’s largest marine sanctuary – Antarctica. The dial’s colour and texture of the SRPH77K echo the views underwater of penguins swimming on the surface, whilst the penguin silhouette at the 10 o’clock position represents the dwindling numbers of its inhabitants.

The shape of this watch is affectionately nicknamed by Seiko fans as a ‘Tuna’ – because of its larger diameter and bold shape like a tuna tin – loved for decades since its release.

This version of the Seiko Save the Ocean Tuna can SRPH77K features a 4R35 automatic calibre with a power reserve of 41 hours. The movement has a daily time tolerance of +35 / -45 seconds.

The Seiko Tuna SRPH77K Prospex is an Automatic movement watch that is powered by the movement of the wearer and it features a water resistance rating of 200m. The SRPH77K features a blue textured dial with a stainless steel case and matching blue soft silicone strap. The glass used is Hardlex.

The case size of the SRPH77K is 43.2mm and thickness 12.63mm with a lug-to-lug size of 44mm and a lug width of 20mm and the entire watch weighs approximately 130gm. 

What we love: The finish and the overall look of the SRPH77 is simply classic. 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.

Ships in 1-3 Business Days from Sydney with Australia Post Express. Sydney customers can pick up on the same day from our Alexandria showroom an hour after placing the order by choosing Click & Collect as the delivery option. 

3 Year warranty from Seiko (Australia). StarBuy are Authorised distributors of Seiko Watches. All Seiko Watches are shipped in Seiko original packaging. All Seiko warranties are registered online directly by Seiko. After purchase and shipping by StarBuy, an email is sent by Seiko registering the warranty. A link to the online instructions manual is also sent within the email. Seiko no longer supply any hard copies of the warranty booklet or the instructions manual.

WARNING - KEEP NEW & USED BATTERIES OUT OF REACH OF CHILDREN. THIS PRODUCT CONTAINS A BUTTON or COIN CELL BATTERY.

Swallowing may lead to serious injury in as little as 2 hours or death, due to chemical burns and potential perforation of the oesophagus.

If you suspect your child has swallowed or inserted a button battery immediately call the 24-hour Poisons Information Centre on 13 11 26 for fast 24/7 expert advice. 

Examine all Watches & Clocks received and make sure the battery compartment is correctly secured, e.g. that the screw or other fastener is tightened. Do not use if the compartment is not secure. 

Dispose of used button batteries immediately and safely. Flat batteries can still be dangerous. 

Button batteries are hazardous. Keep batteries out of reach of children.

Never allow children to replace batteries in any device.

We recommend exhausted batteries be individually wrapped in tape to insulate them from accidental contact and dispose of separately.