This keychain portable charger has a built in battery which can be used as an emergency power bank. It has small in size and can easily hang on your key ring. It is specifically designed to keep you connected in emergency situations or when you're caught off guard by a low battery. It's the perfect accessory for travelers, outdoor enthusiasts, students, or anyone constantly on the move. It's sleek and compact device, providing you with a reliable and convenient power solution whenever and wherever you need it. It can easily attaches to your keys, backpack, or purse, ensuring it's always within reach. It is equipped with a high-capacity internal battery, so it enough juice to revive your smartphone, tablet, or other USB-powered devices. It's compatible with a wide range of devices, including Android, c Type and iPhone, smartphones, Bluetooth headphones, portable speakers, and more.