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https://carrerasdemontana.com/2013/12/04/garmin-forerunner-620-399e44grbateria-10h-analisis-tecnico-optimizacion-garmin-connect-y-comparativa-reloj-gps/
Garmin Forerunner 620 (399€/44gr/Batería 10h): Análisis técnico, optimización Garmin Connect y comparativa reloj GPS