This unit complies with the IEC 61603-7 digital infrared international standard and features a sleek, minimalist design. It can be handheld, worn around the neck, or fit at the waist with a belt case, and the clip microphone can attach to a collar or tie. It supports remote control for PPT slides and laser pointer, and the built-in rechargeable lithium battery provides up to 7 hours of continuous use, making it convenient for teachers to manage and use during lessons.