- Mini size and ultra light weight.<br />- Low power consumption， long standby time and accurate alarming.<br />- Environmental monitoring: starting up normally， dial alarm number， it will be easy to hear the situation within 10 meters around the machine after waiting for five seconds.<br />- Sound control dialing: use mobile phones or fixed-line to get through SIM card number in the alarm， hang up the machine when hearing the sound of the machine about 3 seconds， and that means it sets up successfully. When there is a sound above 45 db within 10 meters around the alarm， the call will be automatically make call number which you set before.<br />- LBS positioning: please directly edit capital letters "DW” SMS to the alarm in China， and on aboard please edit capital letters "GPS” to the alarm， The alarm will revert a message including the information about addresses/longitude and latitude/web site content in a minute.<br />- SOS Emergency call: edit the content of messages capital letters "SOS” to alarm， directly press the key SOS above three seconds after the success of setting， the alarm will directly call the setting number. And the indicator will flash.<br /><br /><br />Material: Plastic <br />Color: Black <br />Dimensions: 43 x 32 x 14 mm <br />Function / command (phone sends commands to the SIM card of tracking device) <br />View Location: DW<br />Voice Callback On: 1111<br />Voice Callback Off: 0000<br />Emergency: SOS <br />Authorization: SQ + phone number <br />Authorization Withdrawal: SQ <br />Operating Frequency: GSM 850/900/1800 / 1900MHZ<br />Charging Voltage: 5V 500mA<br />Product Interface: SIM card slot， Micro USB port <br />1 x Main unit <br />1 x Micro USB charging cable <br />1 x English manual <br />In color box<br /><img src="http://img6.eachbuyer.com/x9/p100/eb4049_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb4049_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb4049_3.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb4049_4.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb4049_5.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb4049_6.jpg" />