| A wristwatch (relogios) or a watch is a kind of a | | | | Electronic Movement and Radio controlled |
| timepiece that a person wears for referring to | | | | movement. The source of power used can be a |
| time. Watches first came into existence in 1600s | | | | spring. There are Self Winding springs also present. |
| as a modification of spring powered clocks. | | | | Some modern watches off the movement of the |
| Modern watches have a lot of other functions like | | | | wearer, some watches run with the help of the |
| that of a calendar in addition to the display of | | | | batteries, or electronic power. Some watches are |
| time. | | | | light powered, while some of them are powered |
| Most common type of wristwatch (relogios) is | | | | by the body heat. |
| worn on person`s wrist and is tightened with help | | | | Time display is generally done in the form of |
| of a watchband that is made up of nylon, leather, | | | | Analog or Digital display. Analog display is done |
| any other plastic strap, metal link or sometimes, | | | | using two hands, one each for hour and minute |
| even ceramic. Before this, watches were pocket | | | | and sometimes another hand is used to display |
| watches which were carried separately. | | | | seconds. In digital display, usually there is a LCD |
| Watch designed was greatly improved in the 21st | | | | screen on which the time in digital format appears. |
| Century due to technological advances in the field | | | | All the watches (relogios) show the time in atleast |
| of metallurgy, physical vapor deposition and | | | | hours and minutes. Few watches also show the |
| composite materials. Better materials are now | | | | date, day and some of them even have alarms. |
| used for making watches which are more durable, | | | | Some more complicated watches have |
| more accurate, more aesthetic and more reliable. | | | | stopwatch, lunar phases, Perpetual Calendar, |
| Escapement is a kind of mechanism that limits and | | | | Minute repeater and equation of the time. |
| controls the unwinding in the watch. It converts a | | | | When the sales of Swiss watch makers went |
| simple unwinding into a periodic energy release. | | | | down, they redesigned it and produced a much |
| This is done by gear interlocking that switches | | | | cheaper version in end of 20th Century. With the |
| among `driven` and `free` state. | | | | help of some graphic designers, they also launched |
| Balance wheel along with the spring or Hairspring | | | | an array of Fashionable watches. Dual time |
| forms a harmonic oscillator. This oscillator controls | | | | watches (relogios) for international travelers were |
| the gear system motion in the watch. This is | | | | designed. Collectable or Jewelry type watches |
| similar to a pendulum clock. | | | | were designed which had high miniaturization and |
| Tourbillon is a rotating type of frame used for | | | | precision along with nice aesthetic look. Some of |
| escapement. It cancels out the effects of the | | | | the leading companies for this kind of watches |
| bias in timekeeping using gravity. Otherwise, the | | | | are Papet Phillipe, Jaeger-LeCoultre, Rolex. Mass |
| watch would have to be kept in the same position | | | | production is done by companies like Omega, Tag |
| for a lot of time. | | | | Heurer and Breitling. |
| Movement in a watch is the mechanism which | | | | Other type of watches (relogios) include |
| measures the time and hence helps to display the | | | | computerized multifunction watches with |
| correct current time. The movements can be | | | | electronic items like Calculators, Digital Cameras, |
| mechanical, electronic and maybe, even both. | | | | Video Games, GPS receivers, Cellular Phones ad |
| Most of the watches use electronic timekeeping | | | | Keydrives were embedded in the watches. Some |
| these days even if the face of watch has a | | | | recent watches have also been marketed as |
| mechanical hand. | | | | Water Resistant as they are not as much |
| Watches (relogios) are mostly classified on basis | | | | affected by water as other watches and are |
| of their movements. The classifications are | | | | categorized on the basis of their water repelling |
| Mechanical Movements, Tuning Fork Movement, | | | | capability. |