PUPTECK Set of 2 Pet Dog Potty Training Bells, Communication Device Price:  $9.99 (as of 26/03/2022 17:24 PST- Details) & FREE Shipping.

Two bells in one package,2.9 inches diameter
Flat and wide top button, easy for your pet to ring
Pleasant sound, loud enough even you are in another room

Usually ships in 24 hours