Ergonomically designed to be lightweight and compact, the Echo Whistle creates a high pitch single tone at 108 decibels.__ With a compact and ergonomic design, the Echo Whistle creates a high pitch single tone that will be heard over long distances.__ It floats on water, and you can attach it to your keys or bag, so it'll be safely tucked away until you need it.__ An ideal choice for first time youth campers, festival goers, DofE participants and Scouts expeditioners.__108dB loudnessHigh pitch single toneKey ring and attachment clipWeight: 12gDimensions (packed): 13 x 63 x 12mm