It has safety belt cutter which can cut the safety belt off easily in traffic accident when safety belt cannot be released; With window breaker which can break windows of car in case of being trapped; Whistle function， to ask others help.<br /><br />Material ABS plastic<br />Product size 7.5 * 3.5 * 1.5<br />Product Weight 18.4<br /><br /><br />packing list:<br />1 * Keychain safety hammer<br /><img src="http://img6.eachbuyer.com/x9/p100/eb04472_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb04472_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb04472_3.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb04473_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb04473_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb04473_3.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb04473_4.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb04473_5.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb04474_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb04474_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb04474_3.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb04474_4.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb04474_5.jpg" />