HSBC Working hours: about 4 hours in the first gear; about 3 hours in the second gear, about 2 hours in the third gear Charging power supply: 5V/1A Working current: 500mAh Battery capacity: 800mA/3.7V Product net weight: 75g Audio input: USB charging Multi-function small fan: USB small fan + colorful night light The mini-grip design is cute and bursting, suitable for all kinds of people, especially children, school girls and cute boys Hanging buckle design, easy to carry, go to school, mountaineering, shopping, sports, follow you anytime, anywhere