About the Watch in short. The watch features high-quality finishing in every detail, including zaratsu polishing. As for functions, in addition to time correction by using the standard radio wave receiving function, the watch is equipped with a time correction function using a smartphone link via Bluetooth®.
OCW-T4000 Model Range *may be updated
OCW-T4000C-3A OCW-T4000CL-2A 
OCW-T4000BA-1A3 OCW-T4000A-1A OCW-T4000-1A
Official OCW-T4000 Specs / Features *for base version OCW-T4000-1A
- 100 meter water resistance
- Sapphire glass with non-reflective coating
- Bluetooth
This watch can be connected to a smartphone or PC using Bluetooth interface. - Chronograph
You can measure the amount of time between two events using this watch. - Glowing Hands
The hands of this model have a luminous layer that glows in the dark. - Glowing Markers
The markers of this model have a luminous layer that glows in the dark. - Perpetual Calendar
Will automatically show you day, date and month, including leap years until the year 2100. - Power Reserve Indicator
You will always know how much energy your watch has and when it should be charged or winded. - Radio Controlled
This watch receives a calibration radio signal, ensuring that the displaying time is always exact. - Solar Powered
This watch can be charged from almost any light source and run few months or more in the dark when fully-charged - World Time (nearly 300 cities)
- Date and Day display
- 24 Hours Format display
