features:<br />1. and high quality<br />2.light weight and easy to carry<br />3.red led light <br />4.sound alarm<br />5.easy to use， all you have to do is whistle and it‘s alarm will sound<br />6.sensing range: 0-5m<br />7.color: black<br />8.size: 50*35*15mm<br /><br />package included:<br />1/2/5x anti-lost key finder