Lifesystems whistles have been designed as the quintessential safety tool for any outdoor adventure, whether you need a signalling tool for group communication or an emergency alert device. Made from tough, weather-resistant materials, LifeSystems whistles are built to withstand harsh conditions, making them perfect for hiking, trekking, camping, and survival kits. The Mountain Whistle is a compact and durable aluminium whistle used for emergencies or signalling when in the mountains. the pea-less design means there are no moving parts, making this whistle highly effective in wet and windy conditions. Mountain Whistle Features Compact, lightweight and durable aluminium body Tri-chamber design offers super loud tri-toned sound that is effective in heavy winds or storms Pea-less design (no moving parts) easily ejects debris and water Key-ring attachment Ideal for climbers or mountaineers for emergencies or general signalling TECH SPECS Weight: 11g Dimensions: 12 x 12 x 60mm