PTS Resources D3521


12 1/4 x 12 3/4”’ | Automatic + Battery | Swiss Lever + Quartz | Sweeping Seconds |


  • Automatic for seconds, quartz for hour and minute display
  • The winding stem is used to set the quartz movement and has no connection to the mechanical movement (-> no manual winding possible)
  • The entire mechanical movement, including the automatic, is only used to move the second hand
  • To change the battery of the quartz movement, the entire plate must be removed
  • PTS is a movement supplier from Hong Kong that has movements designed in-house by various Chinese manufacturers, but also sells their standard movements. The actual manufacturer of this movement is unknown, but it is probably produced exclusively for PTS


  • Listing ID: 3666
  • Manufacturer / Brand: PTS Resources
  • Caliber: D3521
  • Size: 12 1/4 x 12 3/4''' (base plate) (27.5 x 29.0 mm)
  • Shape: Form
  • Winding: Manual (Crown)
  • Hand Setting: Crown
  • Seconds Hand: Sweeping seconds (central seconds)
  • Escapement: Lever (Swiss, English, Glashütte)
  • Date & Day: None
  • Jewels: 19
  • Shock Protection: Similar to KIF Ultraflex
  • Beats per hour: 21,600
  • Balance Type: Glucydur?
  • Power Reserve: Unknown
  • Production Period: Approx. 2013+
  • Identification: Listed in the PTS Resources catalog 2013/14.
  • External Link:
  • Country: China
  • Contributor ©: member Badener (Andreas Kelz)

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