Ganance Heir Smart Disc
No matter how they try, smartwatches can't replace the elegant artistry of mechanical timepieces. The Ganance Heir Smart Disc gives the latter many of the benefits of the former. Measuring 3mm thick with full-day battery life, it uses micro-suction to attach to the caseback of traditional wristwatches, adding notifications, tap-based remote control, and basic activity tracking. Available for reservation now, it's compatible with iPhones and is expected to begin shipping in Summer 2024.