Name: extended ultrasonic dog flute (with exquisite pendant, more convenient to carry)
Material: Copper
Size: Flute 10cm long chain 23cm long
Color: Silver
usage method：
Loosen the sound wave adjusting screw, while blowing air in from the air inlet, rotate the adjusting rod to\
Appropriate pitch. After the adjusting rod is screwed, tighten the sound wave adjusting screw
Notes:
Due to the difference of manual measurement, please allow 1-3cm difference.