not sure but who ever I spoke too made out there tracking system is for small fleets. They all seem roughly the same. Enforcer 4 ticks the boxes for me think I’ll order one tomorrow so I have it Monday. 3 month battery life. Motion sensing. It notifies you if there’s movement when the battery gets low when your subscription needs topping up. It up dates every 5 seconds or something like that if your watching it live on Google maps. Hopefully it works well. I worry about the stupid thing all the time. Too many people out there who steel what others work hard for