... of Zhejiang Province,Specializing in Pet Apparel(Tee,Jacket,Sweater and all Accessories),Pet Carrier,Pet Beds,Pet Collar/leash/harness,Pet bowls with different material ... °COperation Temp.-20°C to +55°CHumidity5%--95% non-condensingBased on the GPS satellites and GSM(850/900/1800/1900MHZ),and ... . Low power consumption, long standby of 3-15 days (depend on the working mode). GPS DOG TRACKER COLLAR