The Withings Steel HR hybrid smartwatch line gets sapphire glass for an additional dose of durability-- bringing about the Steel HR Sapphire Signature series of minimalist wearables.
The Sapphire Signature watches offer all the features of the Steel HR line, including heart rate monitoring, workout tracking, smart notifications and up to 25 days of use on a single charge. The watches pair with either iOS or Android smartphones via Bluetooth, are water resistant up to 50m and are scratch proof thanks to the aforementioned synthetic crystal sapphire glass face cover.