Citizen Silver Citizen Mechanical Open Waterproof NP1014-77E Men's Watch, Collection, Automatic, Heart,

This open-heart mechanical (automatic and manual winding) watch from the CITIZEN COLLECTION pursues both basic watch performance and design. It features a caliber with a "second hand stop function" that stops the second hand when the crown is pulled out to set the time. This model is packed with the charm of mechanical watches, including a rotating weight and a see-through caseback that allows you to enjoy the mechanical movement. [The charm of mechanical watches: Open Heart] This watch combines two separate rings for a three-dimensional, stately design. It features a subdial with a 60-second hand and other special features. The open heart design allows you to enjoy the delicate movement of the balance wheel, the heart of a mechanical watch, from the 7 o'clock position on the dial. The case back is a see-through back, allowing you to see the rotating weight and mechanical movement. The simple adjustment feature allows you to easily adjust the band size yourself. [Designed for long-lasting use] We have pursued improved durability with the desire to ensure that you can use it for a long time. Its 10 ATM water resistance and durable sapphire crystal protect your precious watch from any situation. [Mechanical automatic watch] This is a mechanical automatic watch powered by a mainspring. When you wear the watch on your wrist, the movement of your arm moves the rotating weight inside the watch, automatically winding the mainspring. You can also wind the mainspring by hand. The see-through case back allows you to see the rotor and balance wheel in action. (You can also find instructions for operation in the instruction manual on the manufacturer's website.) [Product Details] Mechanical watch, automatic and manual winding, -20 to +40 seconds per day, approximately 42 hours (when fully wound), sapphire crystal, case and band: stainless steel, water resistant to 10 bar