This is a rechargeable LED walking keychain. It flashes and lights up brightly, making it safe for nighttime walks by alerting others to your dog's presence. This product includes the main unit, keychain hardware, and a USB charging cable (TYPE-A) as a set. This is a custom-made item. After ordering, please select a design from 1-20 on the transaction page and provide the name you would like printed. We support Roman letters, hiragana, katakana, kanji, and numbers, but please note that the font will be the sample type. * Can be used for approximately 4 hours on a full charge. * This product is not waterproof, so please refrain from using it in situations where it may get wet.