If you want a watch with an ecologically friendly, renewable energy source, this is a great choice. By converting natural or artificial light into electrical energy, it quickly and efficiently recharges the battery.
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.