The ST 1901 SeaGull is a 23 jewel, column wheel, chronograph, operating at 3 Hz (21,600 vph). It has a running second dial at the 9 o’clock position, a 30 minute counter sub-dial at 3 o’clock, and a sweep second counter mounted centrally along with the timekeeping minute and hour hands. The chronograph functions are controlled through two buttons, one (at 2 o’clock) for starting and stopping the chronograph, one (at 4 o’clock) for resetting the second and minute counters. The ST1901 has many family members, a precise and strong running chronograph watch movement.
|Movement Calibre:||31 mm|
|Movement height:||5,85 mm|
|Functions:||hours, minutes, seconds, calendar, summing up stopwatch|
|Frequency:||3 Hz (21.600 vph)|
|Daily rate:||from -10 to +40 s/day|
|Power reserve:||Chronograph off: 50 h|
Chronograph on: 45 h
The ST1901 caliber to a wide extent is a Venus 175, but it is only a rumor that it is produced with the Swiss tools. Also, the ST1901 is roughly as well the same build type Then the Russian Poljot 3017 caliber – only with additional shock protection. The caliber is a reliable, precise and enduring.