Apple says:
90 time checks + 90 notifications, 4 seconds each = 720 seconds = 12 minutes.
45 minutes of app use = what? Hard to know without knowing what the apps are. Some activities equal just seconds of CPU usage. I mean, Flappy Bird would be using lots of resources, while looking at a calendar might not use much at allBut okay, add in the full time even though.
12 + 45 + 30 = 87 minutes of use over 18 hours, or an average of ~4 minutes per hour. Not sure if that counts as "high level" of use or not.
The "Workout Test" and "Music Playback Test" seem more high usage, since those lasted for 6.5 hours each before the battery died.
Nice.
What LG says about their watches batt life? Samsung? Motorola? Huawei? Sony?