Portable pet training bell, metal surface, durable wear-resistant, mechanical press design, the ring is clear and melodious, scientific discipline, cultivate pet nice habits, increase interaction, develop and enhance pet intelligence. Specifications: Color: Red + Black Base Pink + Black Base Yellow + Black Base White + Black Base Blue + Black Base Green + Yellow Base Blue + Yellow Base Pink + Yellow Base Silver + Yellow Base Bright Green Bright Blue Bright Gold Bright Red Bright Purple (optional) Material: Lastics + Metal Purpose: Helps to cultivate nice habits and train your pet, enhance human-pet interaction Ring Way: Mechanical Pattern: The Dog Claw Prints Package Weight: 80g / 2.82ounces Package Size: 100 * 75 * 50mm / 3.94 * 2.95 * 1.97in Packing List: 1 * Pet Training Bell