1,Ultra-Long Standby Battery: a full charge of 2.5 hours can last for maximum of 4 months on watch mode, 45 days on running mode and 22 hours on GPS + running mode. No need to take charger or power bank. Furthermore, it weighs only 32g with the strap which makes it comfortable to wear while sleeping, working, doing sports or on the go.
2,Real-time Activity Tracker: the built-in Sony 28nm low-consumption GPS + Glonass module allows more accurate location detection, route mapping, distance measuring, speed calculating, pace tracking, real-time heart rate monitoring etc. It has IP68 waterproof and dustproof rating to meet basic needs of outdoor and it also provides detailed statistics of fitness activity… More at Amazon.
Too good to be true surely?