Description: Type: Pet LED Light Flashing Blinker For Walk The Dog Application: Use for Hanging on Pet Neck to Protect Pets Safety at Night . Battery: 3 X AG3 Button Batteries (included) Lighting Mode: Flashing Circulation Keyring: 3cm(1.18") Weight: About 26g   Package Includes: 1 x LED Light Keychain (The Color Will Be Sent By Random)   Notice: 1.Due to the difference between different monitors、 the picture may not reflect the actual color of the item. Please consider this before the purchase. 2.Please allow slight deviation for the measurement data.