Citizen Eco-Drive® watches are sustainably powered by light, no batteries required. Converting any kind of light into energy to power a watch, Eco-Drive enables the surplus to be stored on a power cell. On a full charge, an Eco-Drive watch runs for months even in darkness. It’s designed to charge from ordinary everyday light sources so you can go about your everyday life confident your watch will never stop.
This watch runs entirely on self-generated energy powered by the motion of your body. That means reliable accuracy and no batteries to change. It holds a charge up to six months without being worn. Just recharge with the shake of a wrist.
This mechanical watch has a rotating weight (oscillator) that winds the mainspring whenever you move your arm. It doesn't need a battery and as long as it's moved around every so often, it will never need winding.
If you like to keep track of time, here's one that also functions as a stopwatch, capable of recording the time of an event down to tenths/hundredths of a second. It's a chronograph movement that may be either mechanical or electronic (quartz, digital or LCD).
The most durable and commonly used watch case material, stainless steel is highly resistant to rusting, scratching and corrosion. Comes in silvertone and goldtone finishes and is often labeled "stainless."
This highly scratch-resistant crystal is created through the fusion of sapphire and mineral glass crystals. Virtually impervious to scratches and cracks, it can be cut thinner than any other watch flass.