Casio has officially launched the Edifice EFS-S660 series in Japan, bringing a solar-powered chronograph to the market priced at 33,000 yen (approximately $208 USD), according to Casio Japan’s official product listings. The lineup includes two distinct models slated for an August release: the steel-banded EFS-S660D-1AJF and the rubber-strapped EFS-S660PB-1AJF, which ties directly into a partnership with Toyota Racing.
Edifice EFS-S660 Specifications and Pricing Details
Both models share a compact case architecture measuring 45.3 x 38.3 x 11.6 mm, featuring a 38.3 mm width that matches previously leaked renders. According to Casio Japan, the watches incorporate sapphire crystal with an internal anti-reflective coating and a water resistance rating of 10 bar. The dials use a honeycomb structure designed to let light pass through to the underlying solar panel without sacrificing a traditional aesthetic. Power management relies on Casio’s solar system, which provides roughly five months of operation on a full charge without additional light exposure, alongside a monthly accuracy of roughly ±20 seconds.
Comparing the EFS-S660D-1AJF and EFS-S660PB-1AJF Models
The two reference numbers released by Casio carry distinctly different builds and visual identities. The EFS-S660D-1AJF features a stainless steel case and bracelet paired with blue chronograph hands, bringing the total weight to 129 grams. In contrast, the EFS-S660PB-1AJF utilizes a rubber strap, a gray IP-coated case, a black IP-coated bezel, and red chronograph hands, dropping the total weight down to 71 grams. Marketing materials for the rubber-strapped variant explicitly link the timepiece to Toyota Racing, showcasing it alongside Toyota GR racing cars rather than as a standalone accessory.
Pro Tip: When evaluating solar quartz chronographs, check the dial texture and light permeability specifications. Models like the EFS-S660 balance high transparency for solar cells with intricate details like a 1/20-second stopwatch measuring up to 60 minutes.
Frequently Asked Questions
How much does the Casio Edifice EFS-S660 cost?
Both the EFS-S660D-1AJF and EFS-S660PB-1AJF are priced at 33,000 yen, which translates to approximately $208 USD based on current listings from Casio Japan.
What is the battery life of the EFS-S660 solar chronograph?
According to Casio, the solar-powered system delivers approximately five months of runtime on a full charge without requiring further light exposure.
Which model features the Toyota Racing branding?
The EFS-S660PB-1AJF model features official Toyota Racing branding and is marketed alongside Toyota GR racing cars.
Did you know? The chronograph hands on the EFS-S660 series are positioned at the 12 o’clock mark to allow for faster reading at a glance, while the tachymeter scale runs along the outer edge of the dial instead of the bezel.
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