A. Lange and Sohne Lange 1 White Gold Silver Dial Mens Watch 101.039. Manual-winding movement. 18K white gold case 38.5 mm in diameter. Transparent exhibition sapphire crystal case back. Quick date-correction button located on the case edge at the 10 o'clock position. 18K white gold bezel. Scratch resistant sapphire crystal. Silver dial with white gold Roman numerals and indexes. Offset Main Dial. Small Seconds hand sub-dial at the bottom right corner. Patented large double window date display located at the the top right. Black leather strap with 18K white gold tang buckle.