Jaeger-LeCoultre Q1642450 is a Rendez-Vous ladies watch with day-night indicator. It has a 34mm stainless steel round case, double anti-reflective sapphire crystal and 30m daily water resistance with solid case back. Silver guilloche dial is decorated with diamond hour markers and blued steel hands. The iconic fan-shaped day-night aperture at 12 o’clock alternates silver daytime and starry-blue nighttime display, alongside date window at 6 o’clock. It is paired with original dark brown alligator strap and steel tang buckle. Powered by in-house Cal.967A automatic movement with 32 jewels, 28800vph beat rate and 43-hour power reserve, it features hours, minutes, seconds, date and day-night indication. With elegant classic design, it suits daily commuting and formal events, possessing excellent wearing and collectible value. 积家 Q1642450 属于约会系列日夜显示女士腕表，表径 34mm 精钢圆形表壳，双面防眩光蓝宝石表镜，30 米生活防水，密底表盖。银白色玑镂雕花表盘搭配钻石时标与蓝钢指针，12 点位标志性扇形日夜显示窗口，白昼银底、夜晚星空蓝底切换，6 点位日历视窗，整体柔美精致。原装深棕色鳄鱼皮表带搭配精钢针扣，质感细腻。腕表搭­载积家自产 Cal.967A 自动机械机芯，32 颗宝石轴承，振频 28800 次 / 小时，动力储存 43 小时，具备时分秒、日历、昼夜显示三大实用功能。经典日夜窗是约会系列标志性设计，­风格温婉轻奢，适配日常通勤、晚宴穿搭，兼顾佩戴装饰与收藏价值，是积家热门正装女表­。