The Amazfit GTS smart watch has a high resolution AMOLED always-on display, heart rate and sleep monitoring, and built in GPS tracking with 12 activity types. All contained in a thin 50m waterproof aluminium body with up to 14 days of battery life.  For around £110 or $140 it sounds good value. But it’s considerably more expensive than the still popular Amazfit Bip I … [Read more...]