Booster K1 air is a compact humanoid platform built for robotics competitions, research, education, and embodied AI development. Standing 95 cm tall and weighing under 13 kg, it delivers agile mobility with 22 degrees of freedom (DoFs), supported by binocular depth vision, a 9-axis IMU, and a 6-microphone circular array for walking, obstacle avoidance, and dynamic movement. It supports both no-code teaching and professional algorithm development, backed by an open SDK, ROS2 interfaces, and the Booster Agent embodied AI application platform. This makes it an ideal solution for laboratory research, classroom instruction, and competitive robotics events.