Compact Design - The small size makes it easy to take the XG2 wherever you go. Mighty Sound - Powerful audio from a small device – the XG2 achieves impressively high sound pressure from a small footprint, so you can still enjoy exhilarating audio. String attachment - Attach anywhere – the convenient, elastic string can be used to connecting the XG2 to your backpack, bike, goalpost and much more. Military-grade toughness - The XG2 comes with a rugged design, satisfying military standards to ensure strong durability. Waterproof IP67 - Protected from submersion in water – never worry about getting the XG2 wet.