Wireless explainer-transmitter mainly transmits voice content through the device. The receiver can realize one person explaining and multiple people listening to the same channel as the receiver. Using the 2.4G frequency band, it has strong anti-interference ability, high confidentiality and multiple channels. The OLED screen displays basic information such as channel number and signal. With buttons and knobs, the product is easy to operate and beautiful. Support - button pairing, saving time for pairing multiple transmitters one by one; one-way one-to-many explanation; 2.4 G international common frequency band; long transmission distance, barrier-free distance 100-150 meters; OLED high-definition wide-angle display receiver: 1. 2.4G international general frequency band; 2. Long transmission distance, barrier-free distance 100-150 meters; 3. OLED high-definition wide-angle display. Working temperature: 55~125℃ Call distance: 100~150m Barrier-free distance Number of channels: 35 Frequency: 2.4GHz Battery capacity: 1000mAh Charging interface: DC5V 1A (Type-C) wireless translation receiver is mainly used to receive signals emitted by the transmitter content. Using the 2.4G frequency band, it has strong anti-interference ability, high confidentiality and multiple channels. Supports multiple-scale multi-person scenarios such as tour guide explanations, corporate reception, wireless conferences, explanations, wireless teaching, etc. Color: White Material: ABS Packaging contents: 1 x Transmitter 1 x Type-c charging cable 1 x Receiver 1 x Headphones 1 x Lanyard 1 x Chinese and English instructions are only the above packaging contents and do not include other products. Note: Light reflection and different monitors may cause the color of the item in the picture to be slightly different from the actual item. The measurement allowance is +/-1-3cm.