Alpina AL-372B4S6B Startimer Pilot Big Date Chronograph Black Dial Metal Bracelet presage Accuracy: ±15 seconds per month

Accuracy: ±15 seconds per month (without receiving a GPS signal and at temperatures between 5°C and 35°C )

30 minute counter sub-dial at 12 o'clock and 12 hour counter sub-dial at 6 o'clock

I work usually quartz accuracy (± 15 seconds per month difference)

Crystal: Box-shaped sapphire crystal with anti-reflective coating on the inner surface

Case Height - 12mm

Alpina AL-372B4S6B Startimer Pilot Big Date Chronograph Black Dial Metal Bracelet presage Accuracy: ±15 seconds per monthMOVEMENT FEATURES CALIBER: AL 372 JEWELS: 13 WINDING: QUARTZ BATTERY LIFE: 48 MONTHS FUNCTIONS: HOURS, MINUTES, SECONDS, BIG DATE, CHRONOGRAPH CASE FEATURES MATERIALS: STAINLESS STEEL CRYSTAL: SCRATCH RESISTANT SAPPHIRE CRYSTAL DIAL: MATTE BLACK CROWN: SCREW IN WATER RESISTANCE: 10 ATM 100M 330FT DIAMETER: 44MM BRACELET WIDTH: 22 20MM BRACELET: STAINLESS STEEL