So light, you'll forget it's there  Experience featherlight comfort and accurate heart rate tracking from your wrist on every run. At only 36 grams, Suunto Run is our lightest watch, designed for a sleek, minimalist fit, with a textile strap that stays snug for no distractions.Run longer, charge less  Suunto Run delivers up to 12 days’ battery life while tracking daily activity and sleep and up to 20 hours of training time with high-accuracy location tracking. Train smarter and recover stronger with tailored insights  Suunto Run tracks your training load, monitors your post-exercise heart rate, and measures your Training Stress Score (TSS) for crucial insights to take your runs to the next level. Precise location tracking provides stress-free navigation so you can easily follow routes from your wrist. Your companion for runs - and everything else  Suunto Run supports your active lifestyle 24/7.