Description:Brand new and high quality Lightweight and small size Portable to carry Easily replace batteries design. Secure stainless steel spring clip ,can easily clips to the D-Ring on your dog's collar. Provide safety for your dogs and pets while it's out alone at night. Not only help to keep your pet safe but also able to be identified clearly from a distance. Can be hung in the pet collar, easy to travel at night, at any time to grasp the whereabouts Can be used as a key ring, but also flash toys, very convenient small things Specification Material:plastic Color: green,red,blue,pink,white(optional) Diameter: 3.5cm Thickness: 2.5cm Length: approx.5.5cm Power: built-in button battery(included)Specifications:Lightweight and small size Portable to carry Easily replace batteries design. Secure stainless steel spring clip Can be hung in the pet collar Can be used as a key ringPackage Included:1 x Pet Collar Pedant(battery included)Notes:Due to the difference between different monitors, the pictures may not reflect the actual color of the item. Compare the detail sizes with yours, please allow 1-3cm error, due to manual measurement. Please leaving a message before you give the bad feedback, if the products have some problems. Thanks for your understandings.