N911S Aluminum Alloy Outdoor Save Whistle High Match Referee Whistle, Random Color Delivery

1. Material: aluminum alloy
2. Applicable to: competition, traffic command, training
3. Decibel: 120 decibels
4. Dimensions: 5.9 x 2 x 1.1 cm
5. Weight: 16g/piece
6. Made of aluminum alloy, sturdy, waterproof and wear-resistant
7. Dual-cavity combination design, high-decibel popping sound
8. No gaps in the whistle tube, no gaps, dirt resistance