HUMANE DESIGN: Uses harmless citronella spray to deter excessive barking, providing a gentle correction method suitable for dogs of all sizes No barking device:Our citronella dog collar work by spraying a substance citronella when dog barks or do unwanted behavior;There are 3 spray level to adjust the spray amount.The dog barks are detected via an internal microphone Only barking twice or more in 10 seconds will trigger the spray which is More Humane each time your dog barks,it emits burst of harmless citronella spray to stop barking VERSATILE FIT: Adjustable collar strap accommodates small, medium, and large dogs with customizable sizing for comfort Water resistant and easy to refill IPX65 Waterproof: The barking collar built-in batterySpray bark collar is lightweight and water resistant(not for heavy raining,swimming or bathing),a great training bark collar for dog.citronella bark collar fully refilled can hold 32 sprays (citronella spray can not included) Rechargeable citronella dog collar:This anti bark collar is rechargeable,fully charge it in 2 hours and last up to 10days of regular use.The spray bark collar packed with an adjustable nylon dog collar,USB charge cable neck size requirements, adjustable collar options, and specific sizing for different neck circumferences. HUMANE DESIGN: Uses harmless citronella spray to deter excessive barking, providing a gentle correction method suitable for dogs of all sizes No barking device:Our citronella dog collar work by spraying a substance citronella when dog barks or do unwanted behavior;There are 3 spray level to adjust the spray amount.The dog barks are detected via an internal microphone Only barking twice or more in 10 seconds will trigger the spray which is More Humane each time your dog barks,it emits burst of harmless citronella spray to stop barking VERSATILE FIT: Adjustable collar strap accommodates small, medium, and large dogs with customizable sizing for comfort Water resistant and easy to refill IPX65 Waterproof: The barking collar built-in batterySpray bark collar is lightweight and water resistant(not for heavy raining,swimming or bathing),a great training bark collar for dog.citronella bark collar fully refilled can hold 32 sprays (citronella spray can not included) Rechargeable citronella dog collar:This anti bark collar is rechargeable,fully charge it in 2 hours and last up to 10days of regular use.The spray bark collar packed with an adjustable nylon dog collar,USB charge cable