A. Lange & Söhne Lange 1

The A. Lange & Söhne Lange 1, reference 101.021, has an 18-carat yellow gold case. The 38.5 mm case is 10 mm high, has 20 mm between the lugs and a see-through back, and is water resistant to 30 metres. A champagne dial carries an outsize date and power-reserve indicator. Manual-winding calibre L901.0 contains 365 parts. The movement beats at 21,600 semi-oscillations per hour and has a 72-hour power reserve. A middle brown alligator leather strap closes with an 18-carat yellow gold pin buckle.