This Sorna alarm watch has been sold in different models, one example is a parking meter version. 17 Jewels, the upper crown is used for the normal watch functions like winding and moving the hands, the lower crown adjusts the alarm time and winds the alarm spring. The red hand shows the alarm time. Signed front: “Sorna, 17 Jewels, Alarm, Shockprotected, manufactured in Switzerland”, back: “Shockprotected, Swiss made, Waterprotected, Steel Back, Manufactured in Switzerland, 2590”, inside: “Caliber 1217, 1 Jewel (!!), Swiss, Basis Watch, Unadjusted” Black Leather band.
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