Whether jogging, running, or on the treadmill, with the ANT+ compatible Foot Pod from Garmin you can measure your distance and cadence when indoors or otherwise out of GPS range. The Foot Pod relays the data it captures wirelessly to a computer, sport watch, or smartphone adapter with ANT+ support. To make it as unobtrusive as possible, the Foot Pod can attach to shoelaces or fit in the mid-sole pocket of compatible shoes. 

Compatible Devices (or Check your Watch's Spec for Compatibility if Not Listed Below)

• ANT+ Adapter for iPhone
• Approach S60
• Aviator Action Pack (D2 and VIRB Elite Aviation Bundle)
• D2, D2 Bravo, D2 Charlie
• Descent Mk1, Mk2
• Epix
• fēnix, fēnix 2, fēnix 3, fēnix 5, fēnix 6, fēnix 7.
• Forerunner 15, 210, 220, 225, 230, 235, 25, 305, 310XT, 35, 405, 405CX, 410, 50, 610, 620, 630, 645, 645 Music, 735XT, 910XT, 920XT, 935, 945, 955, 45, 55, 965, 245, 745, etc.
• FR60 and FR70
• tactix, tactix Bravo, tactix Charlie
• vivoactive, vivoactive 3, vivoactive 4, vivoactive HR