1,Real-time Locating and Tracking 2.Histroy Reply 3.Rechargeable Batterieys 48Hs Standby time 4.Small size,50g Weight We are a Pet products Leading Company in Taizhou city 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 and so many Pet accessories with Competitive price.Love ...