Budesi Polar FT4 or FT7 Heart Rate Monitor Replacement Wristbands Compatiable for Polor FT4 and FT7 Heart Rate Monitor,This interchangeable accessory bands is made of flexible and durable elastomer material with surgical-grade stainless steel buckle The timeless black and optional Camo as the Classic stytle to be liked by most fashionable person.which can add moer add more fashionable elements for your polor FT4 or FT7 Heart Rate Monitor New Fashion Style chases tendency of the day. Heart Rate Monitor Makes you more ,perfect mix together with sproting tracker! Intended for high intensity workouts and sleep tracking ,it's a very economical and practical products. NOT included Heart Rate Monitor or other parts, only OLAR FT4/FT7 Heart Rate Monitor replacement bands