The Polar M430 watch with built-in GPS provides speed, distance, altimetry and inclination data and records activity 24/7.
Compatible with Polar sensors and with other brands via Bluetooth.
S: wrist circumference 130-187 mm
M/L: wrist circumference 130-210 mm
Weight: 51 grams
Battery: 8 hours (GPS mode) and 9 days (smart mode)