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GPS tracker ( Mini Waterproof Builtin Battery GSM GPS tracker ST-901)

ST-901 Function: - Build-in GPS Vehicles locator. - Support 4-frequency GSM 850/900/1800/1900 MHz which can Work worldwide - Support track the real time address by google link - Built in battery 2G Version 150mAh,3G Version 55mAh. - Support Geo Fence Alarm - Main Power Off Alarm (with built battery only) - Support single location - Support Over Speed Alarm - Support Low Power Alar - Waterproof - With ACC to detect ignition