Features: CUTTABLE: The total length of this necklace is 70cm. You can also cut it to fit your dog\'s size. It is very convenient to adjust the size! 3 LIGHTING MODES: Quick flashing, slow flashing and normal lighting, choose any mode you like for your dogs! USB CHARGING: Charge the necklace through the USB cable, convenient and easy. And you don\'t need to change battery again and again. MULTIPLE COLORS: There are 6 colors for you to choose, respectively are blue, pink, green, red, yellow, orange. KEEP YOUR DOG SAFE: When your dogs are out at night wearing this flashing necklace, they can be seen by pedestrians and car drivers, so some accidents can be avoided.