[New product in May 2026] Citizen Cross Sea ES9500-51A｜hikari collection Square x 2way band x Perfect x approx. 33g, the long-awaited square 2way model is now available

The long-awaited square 2way model from the Citizen Cross Sea hikari collectionES9500-51Awill be released on May 14, 2026.
Until now, hikari collection has featured round cases, but this ES9500-51A uses a square form. The gentle case line typical of Cross Sea wraps around the square geometric outline, giving it a unique presence that could be described as a "soft square" rather than an angular impression.

The biggest new feature is the ability to change the band using the "interchangeable structure." The set includes a super titanium metal band and a light gray replacement band made from natural materials, so you can replace it yourself to suit the occasion. This model is the beginning of a new way to enjoy the Cross Sea, ``a watch that you can change according to your mood.''

Dark brown Roman numerals x 3 cut parts—bringing the hikari-like shine to your hands.

2-way design with a replacement band - Interchangeable structure allows you to change clothes according to the occasion.

Square x metal band——The clean silver color creates an elegant look on your hands.

Wearing a metal band - It's lightweight at about 33g and the elegant silver color looks great on your wrist.

Wearing a replacement band - The light gray natural material gives a feminine and soft impression.

■ Main features

• hikari collection Square 2way Model：Cross Sea's first square case x 2-way band new hikari collection
• Interchangeable structure (2way band):Set includes a metal band and a replacement band (natural material, light gray). You can change it by yourself according to the scene.
• Simple adjustment:Specifications that allow you to easily adjust the length of the metal band by yourself
• Equipped with Cal.H060:Eco-drive radio movement. Supports 4 stations: Japan, China, Europe, and America
• Omnidirectional reception function:Automatically searches for the best reception direction while moving the clock. No need for troublesome orientation adjustment
• Approximately 3 years of operation when power save is activated:Long life design when fully charged
• Perfex (proprietary technology):It integrates three functions: "Class 1 magnetic resistance," "shock detection function," and "automatic needle correction function." Prevents displacement due to magnetism and impact
• Advanced Direct Flight (24 cities):High-precision stepping motor that directly drives the needle with the motor
• Perpetual calendar:Automatically adjust the number of days and leap years for each month
• Super Titanium (Duratect Platinum):Approximately 40% lighter than stainless steel and 5 times more surface hardness. Beautiful light silver color finish
• Sapphire glass (non-reflective coating):High-quality glass that is resistant to scratches and minimizes reflections
• Dark brown Roman numeral indexes:Round Roman numerals and shining cut parts at 12, 6, and 9 o'clock create a hikari-like elegance.
• Luminous (hand):Ensures visibility even in dark places
• Smart control function (remaining charge display):You can check the charging status by checking the needle position.
• 5 ATM water resistant/Made in Japan:Guaranteed daily waterproofing and reliable quality
• 1% for the Planet compatible/Eco Mark certified:sustainable choice

■Specs

■ The long-awaited “hikari collection Square”—a new proposal of a soft square

One of the reasons Cross Sea's hikari collection has been loved for so many years is the gentleness of the case lines. Although the ES9500-51A uses a square form, the corners of the case are wrapped in rounded curves to create a finish that does not compromise the feminine softness typical of Cross Sea.

Dark brown Roman numerals are arranged in a round pattern on the dial, and sparkling cut parts are added at the 12 o'clock, 6 o'clock, and 9 o'clock points. The combination of cut parts that sparkle depending on the angle of light and calm Roman numerals creates a deep pocket that can be worn both dressy and casual.

■ “2-way fun” with interchangeable structure

The latest attempt of the ES9500-51A is the adoption of an "interchangeable structure" that allows you to change the band yourself. You can swap out the included super titanium metal band and the light gray replacement band made from natural materials to suit your mood or occasion.

When you wear a metal band, you get a sharp and elegant impression, and when you wear a replacement band, you get a feminine and light atmosphere—you can enjoy completely different looks with just one watch. The metal band has a simple adjustment specification, so you can adjust the length without any tools.

■ Super titanium x Perfectex: “balance of lightness and reliability”

The super titanium (Duratect Platinum) used for the case and band is Citizen's proprietary material that is approximately 40% lighter than stainless steel and has a surface hardness more than five times that of stainless steel. The light weight of approximately 33g is directly connected to making daily use less tiring.

The Perfect function, which integrates three functions: anti-magnetic, shock detection, and automatic hand correction, prevents time lag due to everyday magnetism and shock. With the combination of 4-station radio wave reception and omnidirectional reception function, the watch automatically searches for the best reception direction and continues to adjust the time accurately while being worn on your wrist.

■ Recommended for these people

• Those who were looking for the square model of Cross Sea hikari collection
• Those who want to enjoy two different expressions by changing the band
• Those looking for the lightness of super titanium and the high quality specifications of sapphire glass
• Those who value accuracy and reliability with 4 station radio waves x omnidirectional reception x Perfect
• Those who want to adjust the band by themselves with simple adjustment
• Those who want to stick to Japanese-made cross seas
• People who want to give a high-quality ladies watch as a gift for birthdays, anniversaries, promotions, etc.

■ Buyer's comment

ES9500-51A is one that shows a new side of cross sea. The moment the hikari collection square was announced, I thought, ``This is the one I've been waiting for.'' Another great feature is that it is interchangeable and comes with a replacement band, and it's impressive to see how the metal and leather materials (natural materials) create completely different looks. Super Titanium's light weight of approximately 33g makes it a cross-sea watch, so you can wear it every day without feeling burdened. We can proudly recommend it as a milestone gift or as a special book for yourself.

— Nanapure Buyer Fujimuro

■ Purchase at each mall

■ Related model (cross sea)

• Cross Sea See list
• Citizen See list

■ Consult on LINE