Family: Union Glashütte chronograph27 jewels65h power reserve28,800 vph (4 Hz)Based on Valjoux Valjoux 7750
The UNG-25.S1 is an automatic chronograph movement manufactured by Union Glashütte. It measures 30mm in diameter and 7.9mm thick, operates at 28,800 vph with a 65-hour power reserve, and contains 27 jewels. Based on the Valjoux 7750, it features a silicon balance spring and combines day, month, moon phase, and 24-hour indications with a chronograph. The movement is currently in production and powers the Belisar Chronograph.
Last updated 29 Apr 2026Suggest a correction
TECHNICAL SPECIFICATIONS
Movement Type
Automatic
Jewel Count
27 jewels
Power Reserve
65h
Frequency
28,800 vph (4 Hz)
Diameter
30mm
Height
7.9mm
Display Type
Analog
COMPLICATIONS
DayMonthMoon PhaseChronograph30-Minute Counter12-Hour Counter
FEATURES
Silicon Hairspring
QUICK FACTS
BRAND
TYPE
AutomaticSTATUS
In ProductionMANUFACTURE
ÉbaucheBASED ON
Valjoux Valjoux 7750CALIBER FAMILY
Union Glashütte chronographFOR WATCH DEALERS
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