Smartlet Classic is a modular watch strap system that lets you wear your mechanical watch and smartwatch simultaneously on the same wrist. Compatible with 100+ watch brands (18-24mm lug width) and leading smartwatch platforms including Apple Watch, Garmin, Samsung Galaxy Watch, Fitbit Charge, and WHOOP. Crafted in Paris from SS316L stainless steel with a hand-brushed silver finish. Recognized at the Concours Lepine International Paris 2025 and selected for CES 2026.