Look no further. Great product quality， that's solidly built. Best of all， its very affordable price. Buy today.<br />Color: red <br />Material: ABS <br />Size: about 17.5 x 3.5 x 2.5 cm; 12 x 4.5 x 2.5 cm.<br />Package size: about 28.5 x 15 x 4.7 cm <br />Working voltage: 9V laminated cell<br />Working current: Transmitter ≤10mA， Receiver≤30mA. <br />Signal transmission format: multi-frequency pulse<br />Signal output level: 8Vp-p<br />Signal transmission distance: ≥3km<br />Working temperature: -20-50℃; Storage temperature: -20-50℃.<br />Audio signal: mono audio frequency and dual audio frequency<br />1 x Transmitter<br />1 x Receiver <br />1 x Earphone <br />1 x Network cable <br />1 x User manual <br />2 x Battery <br />1 x Tool bag <br />In original package<br /><img src="http://img6.eachbuyer.com/x13/p88/ba344_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x13/p88/ba344_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x13/p88/ba344_3.jpg" />                                                        <img src="http://img6.eachbuyer.com/x13/p88/ba344_4.jpg" />                                                        <img src="http://img6.eachbuyer.com/x13/p88/ba344_5.jpg" />                                                        <img src="http://img6.eachbuyer.com/x13/p88/ba344_6.jpg" />                                                        <img src="http://img6.eachbuyer.com/x13/p88/ba344_7.jpg" />