Megadream GPS Tracker, Mini Waterproof IP54 Dustproof Super Positioning Locator with Google Map for Child Seniors Pets Dogs Car Vehicle Luggage, Personal SOS Automatic Dialing Alarm Call GSM Antenna GPS+LBS dual mode Supported, positioning after 26 seconds' cool start , GPS tracker children, seniors, pet, vehicle, luggage Support OS: Android 2.3 and above, iOS 4.0 and above, remote update and maintenance Built-in high sensitivity ceramic GPS antenna and four frequency GSM antenna,three months' historical route can be checked SOS button for SOS call ,automatic dialing, Intelligent Geofence fence out of range APP automatically alert Supported two way voice communication,support familiarity number automatic answering, support 13 different languages