KingNeed 2 g Magnet Portable SPY GPS Tracker + Logger with 4GB SD Card/360 Working Days Long Battery Life/ IPX7 Waterproof/GSM Home Alarm/Drop-Trigger Alert/for Personal/Car Vehicles 4 in 1 GPS/GSM Tracker + GPS Logger + GSM Home Alarm + Remote Voice Bug Monitor Tracker online mode with SIM card, no more any data lost with large memory buffer when the device lost GSM connection, then automatic upload to the server when the GSM signal is back Logger offline mode with memory card, store the location information to memory card, its up to 10 years data storage with 32G byte memory IPX7 waterproof and NO installation need, easy attach to any iron surface with Strong Magnets, even under the car just a second Max 360 working days with 10000mAh battery, GSM home alarm with Motion alert and Drop-trigger alert when tracker is taken off from iron surface