Signal + Central aiming hole<br />1. Hold mirror by one hand， with mirror plane aiming at light source. Let light ray reflect on the other palm.<br />2. Keep this relative position and move aiming hole to your eye. You can clearly see a bright spot through this hole. This spot is named sight bead.<br />3. Slowly waggle signal mirror to let the sight bead overlap communication goal. Then the goal will exactly see heliogram you are sending.<br />4. Move sight bead’s two points back and force along horizon when you cannot see the specific communication goal. Then the heliogram will be seen dozens of kilometers away even on a foggy day.<br />Whistle + Lanyard<br />Whistle is designed as pendant. You can blow it in emergency. Very convenient and practice. <br />Size: 120 x 78 x 10.5 mm<br />Function: signal mirror， high frequency whistle<br />1 x Rescue signal mirror<br /><img src="http://img6.eachbuyer.com/x16/p53/bf995_01.jpg" />                                                        <img src="http://img6.eachbuyer.com/x16/p53/bf995_02.jpg" />                                                        <img src="http://img6.eachbuyer.com/x16/p53/bf995_03.jpg" />                                                        <img src="http://img6.eachbuyer.com/x16/p53/bf995_04.jpg" />                                                        <img src="http://img6.eachbuyer.com/x16/p53/bf995_05.jpg" />                                                        <img src="http://img6.eachbuyer.com/x16/p53/bf995_06.jpg" />