Boat Virgin

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Track your speed and distance while wearing a Polar training computer with the Polar G1 GPS sensor. A terrific alternative to the Polar S1 foot pod, the G1 is compatible with the Polar FT60 and FT80 wrist-top training computers. Once you’re wearing the G1, the sensor employs SIRF StarIII GPS technology to measure speed and distance for sports that don’t exceed 18.3 miles per hour, such as running, kayaking, cross-country skiing, or recreational inline skating. As the G1 compiles the data, your training computer will do the rest, putting you through the paces on your workout routine. The easy-to-use, water-resistant sensor calculates its position by measuring the distance between itself and three or more GPS satellites. Note that GPS positioning requires satellite visibility to work, thus it will only work reliably outdoors, and not in valleys between tall trees and buildings. GPS signals also rely on radio frequencies (RF), and therefore won’t go through metal detail in boat virgin!