Product features: Color blue Size: 70cm Number of LED lights: 12 Material: silicone + PP Bright light: fast flash slow flash long light off Scope of delivery: Necklace1 Charging cable1 High and soft quality: Made of standard silicone + PP materials super comfortable to wear and super safe. At the same time also waterproof so that you can be carefree in any weather. Three adjustable flashes possible: fast flashing slow flashing and constant light, it can be adjusted according to your desire and different situations. Super bright. Charging time: 20 minutes Working time: 2 hours. Adjustable length: Ideal for all sizes of dogs and cats: the original length is 27.56 inches (70 cm). You can use scissors to shorten it according to your pet’s neck size.< br>USB charging: very simple and convenient: no batteries required. It can be charged with cellphones/smartphones/tablets and computers.