GF21 GPS Tracker Device Voice Control Anti-Lost Locator

Product specifications:type: magnetic gps locator by cute 4 uplastic material.color: black.dimensions: 1.575 x 0.906 x 0.630 in.talk time: 150 - 180 minutesworking time: 4-6 daysexpansion card: mini tf cardnetwork: gsm / gprsgsm band: 850/900/1800 / 1900mhzgms location time: 25 secondspower input: ac 110-220v 50 / 60hzoutput power: 5 v dc 300 - 500 ma.battery capacity: 3.7v 400mah li-ion batteryworking voltage: 3.4 - 4.2v dcstorage temperature. : 40 to 85 celsiusoperating temperature. : 20 to 55 celsiushumidity: 5% -95% non-condensingwarning: you must insert the sim card before charging.package includes:1 mini tracker1 usb cable.1 instruction manual