Product description: Material: ABS+silicone Size: product diameter 7cm Battery: 3.7V / 300mAh, Working temperature: 0-40C / 32F-104F Accessories: Including USB data cable, 1 bell rope, 1 feather rope Package Include: 1set * Cat Toys Notes: 1. Please allow 1-3 cm difference due to manual measurement and 3-5 g for the difference between different colors. 2. Due to the screen difference, the color may be a little different from what you expect, please allow it. 3. 1.00cm=0.39" Made of high-quality material, the ball is eco-friendly and non-toxic, durable and scratch-resistant, safe for your pets to bite and chew on. It can roll around randomly and automatically change its direction so it is interesting to tease your cats. This is an automatic toy so that you can release your hands. The flashing ball can draw your pets' attention and stimulate their natural hunting instinct. Also, it is an interactive toy to promote interaction between you and your pets.