Manual
Page 3
... 5. Each click rotates the scale one half of crystal oscillator: 32,768 Hz (Hz = Hertz -Cycle per second) 2. Calendar mechanism: Cal. 7548, 7549: Day displayed in two second intervals. 6. Water-resistance: 600 meter, 300 meter and 150 meter water tested models are available. • Model with "DIVER...'S 600m" mark on the dial (Cal. 7549) : Water•tested to a pressure of 60 atmospheres (600 meters or 2000 ft.) • Model with "DIVER'S 300m" mark on the dial (Cal. 7549) : Water-tested to a pressure of 30 atmospheres (300 meters or 1000 ft...
... 5. Each click rotates the scale one half of crystal oscillator: 32,768 Hz (Hz = Hertz -Cycle per second) 2. Calendar mechanism: Cal. 7548, 7549: Day displayed in two second intervals. 6. Water-resistance: 600 meter, 300 meter and 150 meter water tested models are available. • Model with "DIVER...'S 600m" mark on the dial (Cal. 7549) : Water•tested to a pressure of 60 atmospheres (600 meters or 2000 ft.) • Model with "DIVER'S 300m" mark on the dial (Cal. 7549) : Water-tested to a pressure of 30 atmospheres (300 meters or 1000 ft...