Ray Lewis putting 28-acre Reisterstown home on the market for $2.95 million

Armour39 chest strap

Under Armour's current smart sportswear offering is the Armour39 chest strap, which tracks the user's heart rate, calories and workout intensity and combines the measures to produce a "WILLpower" score. The strap sends the data to the Armour39 app or watch. It's compatible only with Apple products.
Under Armour
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