The Amazfit BIP does all that and can be hacked. The bip2 is much faster and can't be hacked. Both can have GPS and I ran mine for many weeks at a time with notifications, sleep tracking, pedometer, weather, etc.
How did you hack the BIP, and what did you do with it then?
The device is safe since on iOS I restrict the Zepp app from any internet, but you need to refresh your GPS with the app. On Android it's much safer with something like gadgetbridge.