1) Voice call-back? dual microphone? voice IC independent control? high sensitivity. <br><br>2) Positioning platform for life Free platform fee? time purchase? lifetime use someone to Maintain and upgrade the database in a timely manner. <br><br>3) Dual-platform location-based services? according to the regional differences? select the appropriate platform. From worries. <br><br>4) The independent custom made high-capacity polymer battery? not callback about 5 days standby? open callback the next 2-3 days. <br><br>5) Follow-up software escalating? more humane requirements? more cost-effective. <br><br>6) Size: 42 x 32 x 12mm <div class="params_begin">Specification:</div><div class="params_group"><table border="0" class="params_group_table">  <tr>	<td class="params_group_name">			Package Weight		</td>	<td class="params_props">			<div class="params_prop ">		  <table border="0" class="params_prop_table">			<tr>					<td class="params_name">One Package Weight</td>			<td class="params_value">				0.17kgs / 0.37lb			</td>					</tr>		  </table>		</div>			<div class="params_prop ">		  <table border="0" class="params_prop_table">			<tr>					<td class="params_name">Qty per Carton</td>			<td class="params_value">				132			</td>					</tr>		  </table>		</div>			<div class="params_prop ">		  <table border="0" class="params_prop_table">			<tr>					<td class="params_name">Carton Weight</td>			<td class="params_value">				7.70kgs / 16.98lb			</td>					</tr>		  </table>		</div>			<div class="params_prop last_prop">		  <table border="0" class="params_prop_table">			<tr>					<td class="params_name">Carton Size</td>			<td class="params_value">				50cm * 40cm * 32cm / 19.69inch * 15.75inch * 12.6inch			</td>					</tr>		  </table>		</div>		</td>  </tr></table></div><div class="params_end"></div> <p>&nbsp;<img src="//lh3.googleusercontent.com/-oYp3-Nj18a0/Vzl4ATG8byI/AAAAAAAAiB0/flsa52IW_io-CXISwM-o_wO6Gth2NbbmgCCo/s829/sg%2Bback.jpg" alt="" /></p>