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Instinct with durable case and display. WHEN YOU CAN RELY ON INSTINCT, THE WORLD CAN RELY ON YOU! Enhanced optical heart rate technology gauges the intensity of your fitness activities. MILITARY STANDARD 810.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.