Birds Ultrasonic Training Whistle

Name: Training Whistle
Applicable object: bird
Material: Stainless steel
Color: as pictured
Product size: about 11x1.8x1cm/4.3x0.7x0.4 inches
Weight: about 28 grams
Suitable pet type: birds
Product function: whistle training bird to return to bird house
Packing list:
1 x Training Whistle
Note:
Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. 
Manual measuring,please allow 1~3mm error,thank you.