4G LTE+3G WCDMA+2G GSM networks 
Waterproof IP67
LED rolling lights based on light sensor automatically
GPS positioning, with accuracy of 5m outdoor
WIFI positioning, with accuracy of 30m indoors
Web platform/ Phone App/ SMS for positions check
Historical route
Geofence: GPS fence & WIFI fence double care 
Step counting
Voice monitor
Low battery alarm
Ringtone to find your pet