Sellita caliber SW500 M b

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Brand:Sellita
Reference:SW500 M b
Base: Sellita SW500-1
Movement:Handwound
Display:Analog
Diameter:30.00
Jewels:21
Reserve:63
Frequency:28800
Date:Date
Chronograph:Chronograph
Hands:Hours, Minutes, Small Seconds
Sellita caliber SW500 M b

SW500 M b description

Cam operated chronograph - two push-buttons
Hours, minutes and small second at 9 o'clock
60 seconds chronograph in the center
30 minutes counter at 12 o'clock
Optional: 15 minutes counter at 12 o'clock (SW501 M b)
12 hours counter at 6 o'clock
Date with quick setting
Manual winding
Stop second device
28'800 vibrations per hour (4 Hz)
21 jewels
Typical power reserve : 63 hours