Pet Dog Doorbell Adjustable Rope Housetraining Communicate Clicker with 7 Bells. Specifications: You can prevent the dog from scratching the door and going out of the room since the bell is clear and audible. The ringtone quality is excellent, not easy to rustle, and the sound is crisp. Adjustable design make rope is suitable for all kinds of doors. This durable rope is easy to clean and thick. Item Name: Dog Doorbell Rope Material: Nylon, Iron Specification: 7 Bells Features: Portable, Durable, Easy to Use Size: 17cm x 10cm x 2cm/6.69" x 3.94" x 0.79" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Dog Doorbell Rope