朗格，精細及罕有，鉑金腕錶，配萬年曆、計時功能、特大日期、閏年及月相顯示，”Datograph Perpetual”，型號410.025，約2008年製

Accompanied by an A. Lange & Söhne International Guarantee Seal dated February 18th, 2008, A. Lange & Söhne presentation box, product literature, leather folder, setting pin, and outer packaging.

The Datograph Perpetual is A. Lange & Söhne's first wristwatch combining a chronograph and perpetual calendar. The watch features a flyback chronograph and precisely jumping minute counter that allows the chronograph to be reset and restarted instantaneously, as well as a perpetual calendar that remains accurate until the year 2100 when it has to be manually advanced by one day.