Digital display of 50000 RPM 7.4V motor/aluminum wind turbine. Battery: 2000mAh * 2 cells/with protective board/spray code. Charging method: USB charging (Type-C charging interface). Power: 65W. Speed: 43000 revolutions per minute. Rated voltage: 3.7V. Rated current: 1A. Material: PP plastic. Product color: Black. Size: 20.5 * 20 * 7.5cm