Polar Polar G1 GPS Speed/Distance Sensor

This GPS sensor sends speed and distance data to the mother unit while you’re mountain biking, trail running, skiing, walking, paddling, etc. It allows you to tailor your workouts to speed and distance targets in addition to heart rate zones.

Flexible fabric armband
Wireless transmission technology
Operating temperature is -20°C to 60°C
Distance accuracy of +/-2%
Speed accuracy of +/- 2km/h
Water-resistant to 20m
Takes 1 AA battery (lithium or rechargeable NiMH battery recommended for temperatures 5°C and below)
Battery life averages 10 hours (20°C)
Compatible with Polar® RS 300X and FT60