TKSTAR Mini Waterproof Real Time GPS Tracker Car GSM AGPS Tracking System for Pets Dog Cat The latest in pet and personal security.Working Based on existing GSM/GPRS network and GPS satellites, this product can locate and monitor any remote targets by SMS or internet. The most advanced technology of GPS and A-GPS dual positioning. Track the location of the lost or stolen pets, children, the elderly and vehicles. Call the tracker recieve aninstant location map to your phone/tablet/PC of exatly where the tracker is located. Smaller size: 50mm*50mm*18mm(1.96"*1.96"*0.71");Weight:50g