User manual BREIL OS11

[. . . ] [Measuring time with the chronograph] 1) Press button to change the watch to the chronograph mode. The second hand stops at the 0 second position, and changes to the chronograph 1/1 second hand. 2) The chronograph can be started and stopped each time button is pressed. 3) Pressing button resets the chronograph and all hands return to their 0 positions. [. . . ] By knowing how many seconds the vehicle to travel one kilometre, the tachymeter can measure the approximate average speed in km/h during a journey (over a maxinum measurable time of 60 seconds). If the chronograph is started at the same time as the start of the distance measurement, and stopped after 1km, the average speed can be calculated from the position of the second hand. If the vehicle covers the distance one km in 45 seconds, the approximate average speed is 80 km/h. 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. It can also measure how far away a thunderstorm is. 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 from 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. Must be kept away from water and moisture. Can withstand spray, sweat, light rain, washing, etc. Can be worn while swimming but not diving. * Always keep the crown in its normal position. - 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. [. . . ] Keeping the watch clean Use an absorbent soft cloth to clean off any dirt or damp from the watch glass. Wearing the watch when the strap or back of the case is dirty can cause skin irritation. cleaning the watch strap: · Metal bands: use a toothbrush and soapy warm to wash the dirt off. Leather straps: gently rub the face of the strap using a soft dry cloth. [. . . ]