Mad Wave E-Whistle

Two different whistle tones
SOS mode
Easy to use : operated by single hand
Hand grip strap design for easiler grip on hand.
Addition color ring and lanyard provided (To replacement of hand grip strap if not in use.)
Special design metal-tubing to reach 125dB+/-5dB loudness
Handy & Hygienic without blowing the whistle
Suitable for all sporting events
SOS mode: Give out S-O-S Morse code automatically when emergency situations whom indangous and need help
Multi-propose use suitable for: Referee, Coaches, Traveler, Adventurer, Guides, Cheerleaders,Lifeguards, Teachers, Traffic Guides, Dog Trainer…