TW Factory's new work is a replica of the original version, the highest version on the market, Jaeger-LeCoultre Master Series! 1 Equipped with fully automatic machinery! Original fully automatic complex timing function, 3 6-digit timing function, 9-digit running seconds function! Vibration frequency swing 28800 2 diameter 40 mm! 3 sapphire double divination anti-wear mirror! 4 Upgraded butterfly double snaps! (Transparent bottom or dense bottom are optional) TW’s ingenious work welcomes your appreciation! ,