Casio Oceanus OCW-T4000BA-1A3JF OCW-T4000BA-1A3 solar 10 bar watch

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How Do I Return An Item?

If you are not happy with your purchase and wish to return an item, please contact us within 7 days from receiving your order.
Please provide your order number as well as the reason for your return. Our customer service team will review the return request and will send further instructions if the return is approved.
Only items purchased directly from will be accepted. For products purchased from authorized retailers, please get in touch with them directly for returns.
Returned items must be in original packaging, including any accessories, manuals, and documentation.
Returned items must be unused, in the same condition that we sent it to you, and in their original packaging. Stains, folded cards, broken seals/ plastic foiling broken will not be accepted. If the condition of the product shipped back to us is not in acceptable condition we reserve the right to not refund or exchange. Products that have been personalized cannot be refunded or exchanged.
Non-returnable items include items purchased through retailers, incorrect products purchased, and damaged products through customer mishandling.
Returns made without receipt may be refused. Ippojapanwatch reserves the right to deny any return.




Blue is the Oceanus colour. Oceanus is bluer than any other watch. Not because blue is the basis for its elegant design.
Not because of its insistence on using digital technologies to create analogue faces, its insistence on absolute accuracy unbounded by national borders, or its insistence on processing and finishing that exclude mass production. It is for no other reason than that conventional watchmakers never consider taking up daring challenges, even when they think of them.
Blue is the Oceanus colour.
Which signifies that it has a more youthful, innovative spirit than any other watch.

Product Description

Based on the brand concept of "Elegance, Technology", this model uses the classic line of OCEANUS, which has both advanced technology and sporty design, with black DLC processing applied to the entire watch and green vapor deposition on the dial. In terms of functionality, in addition to the time adjustment function using the standard radio wave reception function on the clock, it is equipped with a time adjustment function using a smartphone link that uses Bluetooth®. World time can be set from about 300 cities, and the time zone and daylight saving time can be changed automatically. Equipped with dual dial world time, you can see the time in two cities at the same time. We have given a high-quality finish to every detail, such as rough polishing. It is a simple, functional and elegant OCEANUS that can be used in any scene.

Product specification

  • Case size (length x width x thickness)
  • 48.1 x 42.8 x 11.9 mm
  • mass
  • 90 g
  • Case / bezel material
  • Titanium
  • band
  • Solid band
  • Metal band (titanium)
  • One-push tri-fold type clasp with slide adjustment mechanism
  • Waterproof
  • Water resistant to 10 bar
  • Time adjustment
  • Radio clock Japan / North America / Europe / China region compatible MULTIBAND6
  • Power supply / battery life
  • Tough solar (solar charging system)
  • Mobile link / app linkage function
  • Mobile link function
  • Mobile link function (function interlocking by Bluetooth communication with compatible mobile phones)
  • App
  • Compatible with "OCEANUS Connected"
  • Exterior
  • Glass
  • Double-sided anti-reflective coating sapphire glass
  • Surface processing
  • DLC processing
  • Band wearable size
  • 150-195mm
  • Other
  • Neobrite
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