This emergency whistle is made of aluminum alloy to provide premium quality? durability and longevity.<br /><br />Features:<br />Double tubes and crisp sound? you can use it in any life-saving environment.<br />High frequency diplopore whistle is a good outdoor helper? compact and easy to carry? cavity free bead design? water inside also can be used.<br />For multisport? camping? mountaineering? travel? running? climbing? rock climbing? backpacking.<br />Ultra-light and portable (only 10g)? can attach to bags or wear on your neck.<br />Fit on key chain and backpack? fashionable? practical and portable.<br /><br />Specification:<br />Material: Aluminum alloy<br />Color: Silver / Rose Gold (Optional)<br />QTY: 2<br />Dimension: 5.7 * 1.5cm / 2.2 * 0.6in<br />Package Size: 5.7 * 2.5 * 2.5cm / 2.2 * 1.0 * 1.0in<br />Package Weight: 22g / 0.78oz<br /><br />Package List:<br />2 * Whistle<br><img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/G/Y4560G/Y4560G-1-e582-DVzB.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/G/Y4560G/Y4560G-1-e582-Wf3P.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/G/Y4560G/Y4560G-1-e582-uNRL.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/G/Y4560G/Y4560G-1-e582-vSxj.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/G/Y4560G/Y4560G-1-e582-7gA4.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/G/Y4560G/Y4560G-1-e582-iVvE.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/G/Y4560G/Y4560G-1-e582-qAnC.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/G/Y4560G/Y4560G-1-e582-CSiU.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/G/Y4560G/Y4560G-1-e582-Vu48.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/G/Y4560G/Y4560G-1-e582-yrqM.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/G/Y4560G/Y4560G-1-e582-DzEH.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/G/Y4560G/Y4560G-1-e582-r04L.jpg" /><br>$$<img src="//agdetail.image-gmkt.com/082/358/828358082/img/img.tomtop.com/product/xy/2000/2000/p/gu1/Y/G/Y4560G/Y4560G-1-e582-JAsv.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/G/Y4560G/Y4560G-1-e582-lvJZ.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/G/Y4560G/Y4560G-1-e582-pigN.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/G/Y4560G/Y4560G-1-e582-3VVg.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/G/Y4560G/Y4560G-1-e582-9QIJ.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/G/Y4560G/Y4560G-1-e582-ASae.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/G/Y4560G/Y4560G-1-e582-pXFh.jpg" /><br>