- Loud consistent sound every time
- Easier to give verbal commands without a whistle in the user's mouth
- Each set of AAA batteries produce more than 1000 blasts
- Loud 105db whistle sound can be aimed in the exact direction intended
- Improve hygiene - hand operated instead of mouth blown is sanitary for multiple users
- 3 selectable tones: pealess whistle, buzzer or alarm
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