VIDEO-AUDIO CONTROLLER

Disclosed is a video-audio controller, comprising an earplug head clamp made of metal or chemical fiber material and a tray supporting column connected with a flattened shape rib. The video-audio controller is suitable for the primary and middle school students and adults while learning, writing and...

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1. Verfasser: ZHANG CHANGSHE
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:Disclosed is a video-audio controller, comprising an earplug head clamp made of metal or chemical fiber material and a tray supporting column connected with a flattened shape rib. The video-audio controller is suitable for the primary and middle school students and adults while learning, writing and reading.