User manual BREIL OS20

[. . . ] Chronograph second hand Minute hand Hour hand Chronograph minute hand Normal crown position Calendar Continuous second hand 1. * If the date is set between the hours of around 9:00 PM and AM, the date may not change on the following day. After the date has been set, push the crown back to the normal position. [. . . ] The tachymeter is the device which measures the speed of an automobile. Knowing in how many seconds the car covers a distance of 1 km, the meter can measure the approximate average speed per hours during a journey (up to the maximum measurable range of tachymeter which is 60 seconds). If the chronograph is started at the same time as measurement, and stopped after 1 km, the average speed per hour can be determined according to the position of the second hand. If the car covers the distance of 1 km in the 45 seconds, the average hourly speed during the journey will be about 80 Km. The telemeter is a distance indicator which allows distance to be calculated on the basis of the speed of sound. It is useful, therefore, for aviation, navy, army and artillery purposes. The hand is started the second a flash, smoke or lightning is seen and stopped when the actual sound is heard. The distance, from 1 to 20 kilometres, between the observer and the explosion or storm is read from the telemetry scale. - In order to prevent water coming into contact with the internal mechanism, never pull the crown out when the watch is wet. - If any watches designed for sportswear or use in water come into contact with salt water or heavy sweating, they should be rinsed in fresh water and dried thoroughly. During daily use Can be worn while swimming but not diving Suitable for skin-diving. - Contact with water may cause a deterioration in the quality of some leather straps. - As internal parts of the watch can retain moisture, when the outside temperature is lower than the inside, the watch glass may mist-up. This phenomenon is purely temporary and should not create any problems. However, if it persists for any length of time, the watch should be checked by the shop where it was purchased or by the nearest Authorised Service Centre. Temperature Do not leave the watch exposed to direct sunlight or temperature extremes for long periods of time. Long exposure, in fact, may adversely affect the operation of the watch and actually shorten battery life, causing it to gain or lose time and affect its other functions. Impact This watch can withstand normal everyday impacts and shocks and those normally imparted by non-contact sports. [. . . ] cleaning the watch strap: · Metal bands: use a toothbrush and soapy warm water to wash the dirt off. Leather straps: gently rub the face of the strap using a soft dry cloth. Periodic inspection In order to guarantee long trouble-free operation, it is advisable to have the watch checked by an Authorised Assistance Centre once every two years. [. . . ]