Outdoor camping Three tubes TC4 titanium alloy survival whistle high-frequency whistle sonic boom whistle treble wild survival cheerleaders whistle EDC
Material: TC4 titanium alloy
Color: Color titanium blue
Processing Technology: German standard CNC engraving
Dimensions: 59 * 28mm
Features: Precious metal produced good whistle, the whole piece of TC4 titanium alloy processing, non-component welding; Integrated whistle, drop, rolling, no ball design, bad weather normal use, the water can still sounded; German rules CNC engraving, detailed lines, strong sense of three-dimensional. Three tube sonic boom, silver sharp, fast audio, spread far.