ST3518 Beeper for Hunting and training dogs. 1. The hunter put it on the dog's neck like a collar. 2. When the dog is moving fast, the beeper makes a slow-motion "BIB". When the dog is moving slow or no move, which means that have found the "Bird", the "BIB" becomes very quick. 3. Built-in 3.7V and 500mAh rechargeable polymer battery 4. Internal Buzzer speaker max to 128dB 5. Adjustable sensitivity and sound volume. 6. Camouflage and Yellow available. 7. 5 distinct sounds of choice 8. 10 operating modes available 9. Waterproof, nice for outdoor and hunting use.
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