What are the differences among all Pawfit models?

Pawfit 2 front and back Pawfit-S front and back Pawfit front and back
Technical Specification
Device model Pawfit 2 Pawfit-S Pawfit
Sim Card Embedded Embedded Separate
Subscription Required Required N/A
Availability Europe and North America Europe and North America UK and USA
Location Tracking GPS, Wi-Fi, GSM GPS, Wi-Fi, GSM GPS, Wi-Fi, GSM
Activity monitoring &
customised activity goal
Y Y Y
Data communication GPRS GPRS GPRS
Battery life Up to 7 days Up to 6 days Up to 6 days
Dust & water proof IP68, immersion up to 3m IP66, rain and splash proof IP65, rain and splash proof
Antenna LDS FPC FPC
Attachment Lock Y N N
Sound & light Y Y Y
APP iOS and Android phones and tablets iOS and Android phones and tablets iOS and Android phones and tablets
Smartwatches Apple and samsung smart watches Apple and samsung smart watches Apple and samsung smart watches
Audio ID & Pawfit Voice Y Y Y
Virtual fence, removal
& temperature alert
Y Y Y
Warranty 18 months 18 months 18 months