A tiny watch that is worn around the wrist and is fastened to a bracelet or strap. The word "wristwatch" comes from the words wreath and armlet. It was once made entirely out of gold, but now only consists of several alloys for durability and coloration. Wristwatches are used as timekeepers by people who want to be aware of the time without having to look at a clock or watch tower. They were first developed around 1550s France and since then they have become an important part of human culture. There are many different styles of wristwatches available today with differing appearances and technologies inside them. People often ask me what kind of technology goes into a wristwatch. The answer is actually quite simple - electronics! A wristwatch has batteries that power its internal movement and face. This movement can be hand-powered or electric. Wireless wristwatches are also available. These use radio waves to transmit information between the battery and the receiver attached to your wrist. Such watches are commonly used by pilots and other travelers who want to know the time but cannot carry their phone with them. People also ask how long a wristwatch can last.