Product Features: Can you imagine having a power bank that you always carry with you along with your car keys? This product provides exactly that. - The TAU battery is extremely small in size, weighing only 40 grams. - It is considered one of the smallest batteries in the world, if not the smallest. - Because it's small and lightweight, you can use it with your keychain. - It has integrated cables, including iPhone, Type-C, and Micro USB cables. - Easy to use – simply connect it to your device using the built-in cable. - Charges wirelessly; you can place the charger on a table or attach it to your car visor. This way, as soon as you return home, you can charge it and take it with your keys when you leave. - Battery capacity: 1400 mAh - Sufficient for charging your phone during emergencies or when your phone is running low on battery. Warranty: 1 year