JL Master Calendar Series VI (J28) by S1 Selection presents a refined ultra-thin interpretation of a classic calendar watch design.
The watch is equipped with a modified integrated Cal.899 automatic movement, operating at 28,800 vibrations per hour, ensuring stable and consistent timekeeping performance.
The case measures 39mm in diameter with a slim 9.8mm profile, delivering a clean and elegant wrist presence suitable for daily wear. The crystal is made of sapphire glass, offering high transparency and scratch resistance, enhancing overall visual clarity.
Strap options include either a stainless steel bracelet or a leather strap, allowing flexible styling according to preference.
This model emphasizes thin proportions, balanced aesthetics, and reliable mechanical structure, positioning it as a versatile calendar-style mechanical watch with a minimalist and refined design language.




