About product and suppliers:
            4,138 function heart rate products are offered for sale by suppliers on Alibaba.com, of which other mobile phone accessories accounts for 15%, blood pressure monitor accounts for 8%, and house-service detector tester accounts for 1%. 

A wide variety of function heart rate options are available to you, 

There are 4,408 suppliers who sells function heart rate on Alibaba.com, mainly located in Asia. The top countries of suppliers are United States, China, and Hong Kong S.A.R., from which the percentage of function heart rate supply is 1%, 99%, and 1% respectively. 

Function heart rate products are most popular in United States, United Kingdom, and Australia.