Give learners ages 4–9 a wired USB-C headset for listening activities, spoken responses, video lessons, and calls on compatible Chromebooks, tablets, and laptops. The Avid AHSP400USBC-01G WonderEars AP-400 pairs a USB-C connection with an 85 dB volume limit intended for younger listeners. Its green finish helps distinguish individual headsets in shared learning spaces while retaining a child-focused over-ear design. The KidCom microphone supports clear voice capture for remote learning, language practice, reading assessments, and collaborative classroom work. Soft over-ear cushions provide a more enclosed fit than on-ear designs, while the adjustable headband accommodates changing fit requirements across elementary-age users. This combination addresses listening and speaking tasks without requiring a separate microphone accessory. Physical details target frequent handling in school and home environments. The cable uses a braided, tangle-free construction and is described as chew-resistant, helping reduce common damage points associated with student headsets. USB-C connectivity is the defining connection option for this AP-400 configuration, making it suited to device fleets that expose USB-C rather than a 3.5 mm audio jack. Use it where a child-sized wired headset, microphone, volume limit, and color-coded assignment are required.