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Japan : 4/23 20:22   EN
Europe, UK: Thursday, Apr 30 ~
USA: Tuesday, Apr 28 ~
Australia: Wednesday, Apr 29 ~
Asia: Tuesday, Apr 28
UAE: Wednesday, Apr 29

Order within 3 Hours 37 mins with Scheduled Delivery. If you place an order within this time, We will ship on Monday, Apr 27 2026 This delivery time is calculated by DHL and FedEx. You can check the exact delivery date on checkout page.

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Full refund if not genuine. Full or partial refund, if the new item is not as described.

     Description (4,286 characters)

Set contents: Main unit, box, instruction manual
Waterproof specification: 10 ATM water resistant function
Solar radio clock
World time GMT / UTC
OCEANUS classic line with advanced technology and sporty design under the brand concept of "Elegance, Technology"

It is a simple and solid model equipped with Bluetooth®.

Simple OCW-T4000 that incorporates the brand color blue into the parting board, OCW-T4000A that has black DLC processing on the bezel with excellent wear resistance, black DLC processing on the entire watch, and green deposition Lineup of OCW-T4000BA adopted for the dial and 3 types of variations

In terms of functionality, in addition to the time adjustment function of the watch itself using the standard radio wave reception function, it is equipped with a time adjustment function using a smartphone link using Bluetooth®.

If your smartphone is nearby, connect without button operation and correct the time

It is an advanced time adjustment system that can acquire accurate time all over the world.

With the smartphone link function, you can easily and intuitively set the world time from about 300 cities, and it is possible to automatically respond to changes in the time zone and daylight saving time.

Comfortable support for people traveling around the world on overseas trips and business trips

In addition, it is possible to check the remaining battery level of the watch and correct the hand position with a smartphone, and it is possible to manage the condition of the watch with digital technology by smart phone link.

In addition, it is equipped with a dual dial world time that shows the world time with the in-dial of the 12-hour counter.

You can see the time in two cities, home time and world time, at the same time.

High-quality finishes are applied to every detail, such as rough polishing that requires skill and surface hardening of the case and band by titanium carbide treatment (OCW-T4000 / T4000A).

It is a simple, functional and elegant OCEANUS that can be used in any scene.


・ Tough solar (solar charging system)
・ 10 ATM water resistant function
・ Radio wave reception function: Automatic reception (up to 6 times / day () China radio wave up to 5 times / day) / Manual reception, <Japan&gt
Received radio wave: JJY, frequency: 40kHz / 60kHz (Fukushima / Kyushu) (Models compatible with both stations) <North America region&gt
Received radio wave: WWVB, Frequency: 60kHz <Europe region&gt
Received radio wave: MSF / DCF77, Frequency: 60kHz / 77.5kHz <China&gt
Received radio wave: BPC, Frequency: 68.5kHz * Home time setting If you set to a receivable city, you will receive stations according to the time difference.


・ Mobile link function (function interlocking with compatible mobile phones via Bluetooth® communication)
・ Needle position automatic correction function
・ World time: 27 cities around the world (38 time zones *, with automatic daylight saving time setting function + UTC (Coordinated Universal Time) time display, home time city replacement function * May be updated by linking with a smartphone


・ Stopwatch (1 second, 24-hour total)
・ Battery indicator display
・ Power saving function (In a dark place, the hand movement is stopped after a certain period of time to save power)
・ Date / day of the week display
・ Fully automatic calendar
・ Driving time without solar power generation from full charge When using function: Approximately 5 months When in power saving state: Approximately 20 months * When radio wave reception is not performed or If it does not work with a smartphone, it will operate with normal quartz accuracy (average monthly difference ± 15 seconds).

* O CW-T4000, OCW-T4000A, OCW-T4000BA are certified by the Radio Law of Japan.



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CASIO OCEANUS Bluetooth equipped radio s... 4549526284991

Set contents: Main unit, box, instruction manual
Waterproof specification: 10 ATM water resistant function
Solar radio clock
World time GMT / UTC
OCEANUS classic line with advanced technology and sporty design under the brand concept of "Elegance, Technology"

It is a simple and solid model equipped with Bluetooth®.

Simple OCW-T4000 that incorporates the brand color blue into the parting board, OCW-T4000A that has black DLC processing on the bezel with excellent wear resistance, black DLC processing on the entire watch, and green deposition Lineup of OCW-T4000BA adopted for the dial and 3 types of variations

In terms of functionality, in addition to the time adjustment function of the watch itself using the standard radio wave reception function, it is equipped with a time adjustment function using a smartphone link using Bluetooth®.

If your smartphone is nearby, connect without button operation and correct the time

It is an advanced time adjustment system that can acquire accurate time all over the world.

With the smartphone link function, you can easily and intuitively set the world time from about 300 cities, and it is possible to automatically respond to changes in the time zone and daylight saving time.

Comfortable support for people traveling around the world on overseas trips and business trips

In addition, it is possible to check the remaining battery level of the watch and correct the hand position with a smartphone, and it is possible to manage the condition of the watch with digital technology by smart phone link.

In addition, it is equipped with a dual dial world time that shows the world time with the in-dial of the 12-hour counter.

You can see the time in two cities, home time and world time, at the same time.

High-quality finishes are applied to every detail, such as rough polishing that requires skill and surface hardening of the case and band by titanium carbide treatment (OCW-T4000 / T4000A).

It is a simple, functional and elegant OCEANUS that can be used in any scene.


・ Tough solar (solar charging system)
・ 10 ATM water resistant function
・ Radio wave reception function: Automatic reception (up to 6 times / day () China radio wave up to 5 times / day) / Manual reception, <Japan&gt
Received radio wave: JJY, frequency: 40kHz / 60kHz (Fukushima / Kyushu) (Models compatible with both stations) <North America region&gt
Received radio wave: WWVB, Frequency: 60kHz <Europe region&gt
Received radio wave: MSF / DCF77, Frequency: 60kHz / 77.5kHz <China&gt
Received radio wave: BPC, Frequency: 68.5kHz * Home time setting If you set to a receivable city, you will receive stations according to the time difference.


・ Mobile link function (function interlocking with compatible mobile phones via Bluetooth® communication)
・ Needle position automatic correction function
・ World time: 27 cities around the world (38 time zones *, with automatic daylight saving time setting function + UTC (Coordinated Universal Time) time display, home time city replacement function * May be updated by linking with a smartphone


・ Stopwatch (1 second, 24-hour total)
・ Battery indicator display
・ Power saving function (In a dark place, the hand movement is stopped after a certain period of time to save power)
・ Date / day of the week display
・ Fully automatic calendar
・ Driving time without solar power generation from full charge When using function: Approximately 5 months When in power saving state: Approximately 20 months * When radio wave reception is not performed or If it does not work with a smartphone, it will operate with normal quartz accuracy (average monthly difference ± 15 seconds).

* O CW-T4000, OCW-T4000A, OCW-T4000BA are certified by the Radio Law of Japan.

25954
4549526284991 In Stock