Fangrui Product Details Compact And Discreet Gps Tracker: The Gf-07 Gps Tracker Is Designed For Both Car Safety And Keeping Track Of Children, Ensuring Peace Of Mind For Parents And Car Owners. Its Small Size Makes It Easy To Hide, Providing Covert Monitoring Without Detection. Wide Application: For Tracking Vehicles, Children, The Elderly, Or Assets. Easy To Use With Gsm/gprs Support, It Provides Global Coverage To Keep You Connected And Secure. No Matter The Alarm Locator Is Placed On The Car, In The Childrens Schoolbag, The Elderlys Pocket, Or Valuables Bags, You Can Send Mobile Phone Sms Instructions To The Alarm Locator Via Your Mobile Phone To Query The Location Of The Alarm Locator. Which Is Convenient To Monitor The Whole Process And Grasp The Target In Real Time. S Position. Storage Temperature: -40 C To + 85 C Working Temperature -20 Cto + 55 C Humidity Range - Non-condensing Gprs: Upload 60, / Ip Working Voltage: 3.4-4.2v Dc Standby Current: .5ma Turn On The Sound Control Current: 0ma