Can the best Polar outdoor watch, the Polar Grit X, take on the best Polar multisport watch, the Polar Vantage V2?
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LIGHTEST OUTDOOR WATCH WITH ULTRA LONG BATTERY LIFE: Up to 40h battery life with full GPS and HR tracking (even up to 100h with power save options),
Polar Grit X - Rugged Multisport GPS Smart Watch - Ultra-Long Battery Life, Wrist-based Heart Rate, Military-Level Durability, Sleep and Recovery