REGUNO
[Amazon.co.jp Exclusive] Special Order Model: Black Solar Tech Radio-Controlled Pocket Watch. This limited edition model features a black case, dial, and Arabic numerals. The 41mm case allows for easy reading of the time without getting in the way. It comes with a chain with a hook, so it can be safely carried in a jacket or pants pocket. The design features meticulous attention to detail, and is only available here.
Solar Tech Radio-Controlled Watch, Case Material: Stainless Steel, Accuracy: ±15 seconds per month (when not receiving), Water Resistance (3 ATM), Solar-Powered: Approximately 2 Years of Operation on a Full Charge, Power Save, Perpetual Calendar, Regular Time Reception Function, Forced Time Reception Function, Insufficient Charge Warning Function, Overcharge Prevention Function
[Solar Tech: No Regular Battery Replacements] This function converts light into electrical energy to power the watch. It charges using sunlight or other sources, eliminating the need for regular battery changes. A full charge lasts for approximately 2 years (with Power Save activated). Because it uses light as its energy source, storing it in a location where it can receive light will ensure it remains charged and ensure stable use.
[Radio-controlled watch with automatic time correction] It receives standard radio waves transmitted from an atomic clock, which is said to have an accuracy of 1 second per 100,000 years, and automatically corrects the time and calendar. It receives radio waves transmitted from two stations, Fukushima and Kyushu, to provide accurate timekeeping.
[REGUNO] REGUNO is a simple, affordable standard watch. We offer a comprehensive lineup of men's, women's, couple's, and pocket watches. We offer a wide range of products that transcend the boundaries of age, occupation, and gender, making it easy for anyone to purchase and ensure that REGUNO always has a permanent place on their wrist.
[About charging Solar Tech] Charge by exposing the dial to direct sunlight or fluorescent light. Tips for proper charging: Even when you take off the watch, if you place it in a bright place where sunlight hits the dial, the watch will continue to work properly. Charge it by exposing it to direct sunlight once a month. If storing it in a place out of light, be sure to fully charge it before storing it. Insufficient charge warning function: Charge when the hands start moving every 2 seconds. *You can also check the instruction manual (PDF) on the manufacturer's website.