Working time: 80-120 hours. Specification： Light mode: flashing Size: 4.5 x 2.5 x 1.5 cm. Feature： 1 x LED Light Pendant Versatile and wide range of applications: our warning lights are lightweight and easy to transport. They are very suitable for runners, joggers, children, hikers, climbers, cyclists, dogs, to accompany you and your family safely at all times. Material: Colour: red, yellow, blue. IP45 water-proof, durable: super water-proof function, does not affect use even in heavy rain. The light is made of high quality materials that can effectively improve the brightness of the light and extend the life of the light. flashing light: Are you still worried about disposable batteries for flashing light, are you afraid to throw them and pollute the environment? Then please choose our flashing light Pendant. Multi-function: the pet collar light is practical to determine the position of the pet when it goes out at night and to avoid the child from losing when playing. Rotate the to turn on the flashing light, in any dim outdoor area, this is a warning. This allows the driver to maintain a distance to you to ensure your . Button battery: CR2032 (included). Package included： Specification： 1 X LED Light Pendant Material: Colour: Red, Yellow, Blue. Flashing Light: Are You Still Worried About Disposable Batteries For Flashing Light, Are You Afraid To Throw Them And Pollute The Environment? Then Please Choose Our Flashing Light Pendant. Multi-function: The Pet Collar Light Is Practical To Determine The Position Of The Pet When It Goes Out At Night And To Avoid The Child From Losing When Playing. Rotate The To Turn On The Flashing Light, In Any Dim Outdoor Area, This Is A Warning. This Allows The Driver To Maintain A Distance To You To Ensure Your . Package Included：