Nokia Steel HR is a "hybrid" smartwatch and activity/fitness tracker developed by Nokia and released in December 2017.[1][2] Its design[3] is mostly based on the Withings Steel HR. The watch is available in 36 mm and 40 mm variants, available in various colours and in silicone, leather and woven straps.[4][5] It pairs with a smartphone with the Nokia Health Mate application and also relays smartphone notifications. Steel HR features a heart rate monitor and is water resistant.[6]