A. Lange & Söhne Lange 1

The A. Lange & Söhne Lange 1, reference 101.025, has a 38.5 mm case in 950 platinum. The case measures 10 mm high, has a see-through back and is water resistant to 30 metres. The grey dial displays an outsize date and a power-reserve indicator. A black alligator leather strap fastens with a platinum pin buckle. 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.