Size is approx. 3.5 by 2.3 by 1.0cmAdditional product info: This is an adapter that can convert a USB Type-C connector to a USB Type-A connector. It supports charging and data communication. Charging and data communication cannot be done with this product alone. Please prepare a separate charger and cable. Keep out of reach of children below the target age. There is a risk of unexpected accidents due to swallowing, so never give it to infants. Do not leave it in places exposed to direct sunlight, near heating appliances, or in high temperature, high humidity, or dusty locations for long periods. It can cause deformation and deterioration. Cables and mobile batteries are not included.