Citizen Eco-Drive Men's Classic Corso Chronograph Watch

Citizen's proprietary Eco-Drive technology powers your watch using the most renewable energy: light. This sustainable way to power your watch requires no batteries. Eco-Drive | Purposeful Power utilizes a renewable natural resource by converting any natural or artificial light to energy, which is then stored in a permanently rechargeable lithium-ion cell. This energy storage feature keeps surplus energy in a rechargeable power cell, designed to charge not just from the sun, but also from everyday light sources like indoor fluorescents and desk lamps. As a result, your watch can run for months—even in darkness—with no need for regular battery replacement, so you never have to worry about it stopping.

This multifunction timepiece with stopwatch functionality features a one-second chronograph that can measure up to 60 minutes in 12- and 24-hour time. Timeless styling that effortlessly takes you from work to play, the watch is water-resistant up to 333 feet (100m), making it suitable for swimming and snorkeling, though not recommended for scuba diving. An integrated tachymeter makes it easy to measure your average speed over a distance in miles, kilometers and more.

The stainless-steel watch, crafted in Japan, features a sapphire crystal that is anti-reflective for enhanced readability. It comes with a 5-year limited warranty. To use this watch comfortably, make sure to charge it before it stops running completely. Since there is no risk of overcharging no matter how much the watch is charged (Over Charge Prevention Feature), it is recommended that the watch be charged every day.

Customer reviews for this product are overwhelmingly positive, with an average rating of 4.7 out of 5 stars from 4,144 reviews. Other similar Citizen watches have also received high praise, with a 4.5 out of 5 star rating from 2,132 reviews for the AT8020-03L model, a 4.6 out of 5 star rating from 36 reviews for the CA7003-06E model, and a 4.2 out of 5 star rating from 55 reviews for the BU2021-51H model.

Available in a range of case sizes and dial and band colors, the Citizen watches offer versatile options to suit various preferences. The BN0150-28E model has a 44mm case size, black dial, and black polyurethane band. The AT8020-03L has a 43mm case, blue dial, and blue polyurethane band. The CA7003-06E features a 43mm case, black dial, and brown leather band. The BU2021-51H has a 44mm case, gray dial, and silver-tone stainless steel band.

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