Ganance Heir Watch Sensor

No matter how they try, smartwatches can't replace the artistry of mechanical timepieces. The Ganance Heir gives the latter many of the benefits of the former. Measuring 3mm thick and weighing just 5 grams with a 42-hour battery life, it uses residue-free micro-suction to attach to the back of traditional watches, adding haptic vibrations for notifications, tap-based controls, and basic activity tracking. It's compatible with both iOS and Android and is available for pre-order now for Spring 2026 delivery.

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