[CHANEL Watches] The 20th Anniversary of the New J12 Watch Core Change Latest version details 1 The case is simplified to a single size of 38 mm for both men and women 2 edge grooves increased from 30 in the old model to 40 Make the dial appear wider 3 The crown diameter has been reduced by one third More slim and attractive 6 The timing scale on the inner ring is more refined Add time scale design 7 The hands are designed with the same width as the hour hand and the minute hand, making them more delicate and slender 8 hands, inner ring covered with Superluminova super luminous coating 9 The dense bottom is transformed into a back-transparent design, through the sapphire glass at the bottom