Alpina Caliber AL-435

Brand	Alpina
Caliber Number	AL-435, AL435
In-House?	No
Base Caliber	ETA/Unitas 6498-1
Vibrations Per Hour	18,000 bph
Power Reserve	46 hours
Jewels	17
Hacking Seconds?	No
Functions	Central hours; central minutes; small seconds subdial at 6:00
Country of Manufacture	Switzerland, Swiss made
Known Models	Heritage Pilot MKII (Please add your watches in the comments below…)

The Alpina caliber AL-435 is based off the ETA/Unitas 6498-1. It is often mixed up with the ETA/Unitas 6497-1. The difference between these two Unitas calibers is the the 6498-1 has the seconds subdial at 6:00 and the 6497-1 has the seconds at 9:00.

In Alpina’s own words:

“Finely decorated with “Côtes de Genève” and the distinctive «Alpina» engraving on its bridges, this in-house execution of the famous Unitas movement displays hours and minutes, as well as the seconds at the 6 o’clock position. The hand-wound AL-435 movement creates a special relationship between you and your watch, namely the pleasure of “bringing to life” a mechanical watch, simply by winding it.”  –Alpina

Additional Resources:

• More info on the Alpina Heritage Pilot MKII watch