The Titanium Field Guide

Citizen Exceed Eco-Drive Radio-Controlled Limited (BY1025-17E)

The Citizen Exceed Eco-Drive Radio-Controlled Limited (BY1025-17E) is a current-production dress watch with a super titanium (duratect platinum) case, finished with duratect platinum (light silver) with amber-yellow accents. At 54 g it sits around the middle for dress watches in the guide, and is priced well above the $643 median for the category. The maker states no nickel-bearing steel at any skin-contact point, across the case, caseback and bracelet.

All Citizen watchesWatch dress watchesUnder $3,000LightweightLightest, rankedSolarWorldtimerPerpetual calendar
Price
≈$1,727 (¥275,000)
Material
Titanium
Grade / type
Super Titanium (Duratect Platinum)
Weight
54 g (with strap)
Water resistance
100 m
Type
Dress
Case diameter
41.0 mm
Thickness
11.9 mm
Origin
Japan
Movement
Eco-Drive radio-controlled (multi-band)
Caliber
Citizen H874
Power reserve
Solar (about 2.5 years power-save)
Complications
Day-date, Worldtimer, Perpetual calendar
Colour
Grey
Surface treatment
Duratect Platinum (light silver) with amber-yellow accents
Finish technology
Surface hardening
Caseback
Titanium
Nickel-free
Maker states none
Bracelet / strap
Crocodile leather strap with titanium clasp
Crystal
Sapphire (anti-reflective)
Display back
No
Dial
Black dial, moon-phase subdial
Dial colours
Black
Availability
Offered
Status
Current (limited edition)
Not published
Reference, Lug-to-lug, Hardness, Construction, Matching bracelet, Lume
High confidence Verified Sep 2026 Source: Citizen Japan, Exceed BY1025-17E (maker product page)
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Frequently asked questions

Is the Citizen Exceed Eco-Drive Radio-Controlled Limited (BY1025-17E) nickel-free?

On the maker's published specification, no nickel-bearing steel touches the skin: a super titanium (duratect platinum) case with a titanium caseback, plus a non-steel crown and strap. That is what the guide records rather than a test of the watch, so confirm the contact points with the maker before buying if you react to nickel.

What is the case material of the Citizen Exceed Eco-Drive Radio-Controlled Limited (BY1025-17E)?

The Citizen Exceed Eco-Drive Radio-Controlled Limited (BY1025-17E) has a super titanium (duratect platinum) case with a titanium caseback. This is confirmed against the maker spec.

What size is the Citizen Exceed Eco-Drive Radio-Controlled Limited (BY1025-17E)?

It is 41.0 mm in diameter, 11.9 mm thick, and water resistant to 100 m.

How much does the Citizen Exceed Eco-Drive Radio-Controlled Limited (BY1025-17E) weigh?

About 54 g (w/ strap).

How much does the Citizen Exceed Eco-Drive Radio-Controlled Limited (BY1025-17E) cost, and is it available?

It is current-production and lists from $1,727.

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