Hunting / Whistles & lanyards / ACME 641 Double tone
![ACME Whistle 641 Double tone orange]()
- ACME whistles are frequency-standardized
- Produce consistent sound
- Have two sound modes
- High pitch and trill
![ACME Whistle 641 Double tone black]()
- ACME whistles are frequency-standardized
- Produce consistent sound
- Have two sound modes
- High pitch and trill
