Since the PebbleTime app is unclutchable, it’s impossible to dump the headers using class-dump or class-dump-z. That’s why I posted this entire header file obtained using the tweak FLEX2.
3.5
These steps will generate for you a .dat file, structured like an xml, so it’s not a pure .h header file (you’ll have to convert it manually):
/var/mobile/Documents/Flex
.com.getpebble.pebbletime.dat
.MIT