GK309
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GSM 850 / 1900 or 900 / 1800 MHz Dual-band
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GPS / AGPS / LBS multiple locating mode
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Built-in 600mAh battery
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SOS button for emergency calls and alarms
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Slient mode for class time
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Voice monitor function
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Low battery alarm
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2.4GHz RFID Attendance function
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Colorful customized name lable
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