<https://indigo-summit.com/product/citizen-mens-promaster-diver-eco-drive-watch-stainless-steel/#product>
<http://schema.org/description>
"Proof that a dive watch can be fun &amp; functional with the CITIZEN ISO-compliant Promaster Diver. With Eco-Drive technology, it is powered by light and never needs a battery, so you'll never need to open your caseback or compromise your dive again. Featured in a grey ion-plated stainless steel case with stainless steel bracelet, grey aluminum bezel and matching grey dial, one-way rotating elapsed time and WR200. Featuring our Eco-Drive technology – powered by light, any light. Never needs a battery. Caliber number E168."
<https://indigo-summit.com/product/citizen-mens-promaster-diver-eco-drive-watch-stainless-steel/>