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About product and suppliers:
        Alibaba.com offers 14 polar loop activity tracker products. About 50% of these are pedometers, 7% are other mobile phone accessories. 

A wide variety of polar loop activity tracker options are available to you, 

There are 14 polar loop activity tracker suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Indonesia, and Georgia, which supply 71%, 21%, and 7% of polar loop activity tracker respectively. 

Polar loop activity tracker products are most popular in Western Europe, North America, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 9 with ISO9001, 9 with ISO14001, and 6 with ISO13485 certification.