Ahoj, odpovědi na tvé otázky, vytaženo z manuálu (nechal jsem tam o pár informací více): 1. Exclusive Three Prong Torsional Resonator gives accuracy within 5 seconds/month.2. Chronograph feature with 1/20 seconds, seconds and minutes timing up to one hour. Chrono second hand jumps in 1/8 second intervals (8 times per second).3. Hour minutes and petite seconds time display. Second hand jumps in ? second intervals (two times per second).NOTE: The maximum Chrono reading is 60 minutes.1. Push Button ?A? to start the chronograph. Push button ?A? again to stop theChronograph.2. Push button ?B? to return the chronograph to the ?Zero? or starting point.3. The Chronograph can be stopped and started again. Push Button ?A?, repeatedly, to ?ADD?times together, up to 60 minutes.Ta vteřinovka chrona jede ve stejném módu celou dobu běhu chrona