Wireless Dual-way Signal Communication Sound Card Product Features Wireless Dual-way Signal Communication: This sound card employs a 2.4G wireless solution for seamless dual-way signal communication, ideal for live streaming and playback. Audio Conversion Cable Included: Comes with an audio conversion cable for real-time live streaming monitoring. Connect the cable to the receiver and your headphones to ensure optimal audio quality. Long-lasting Battery: The transmitter's built-in 100mA lithium battery offers over 8 hours of continuous operation, eliminating concerns about running out of power during use. Built-in OTG Sound Card Function: The device features a built-in OTG sound card function, powered by your mobile phone or an external power source. It can also charge your phone, adding flexibility and convenience. Wide Range and High Quality: Capable of transmitting signals up to 20 meters without obstructions and featuring a high frequency response rate and minimal transmission delay for clear, stable audio. Specifications Brand: JOYO Frequency: 2400~2483.5MHz Frequency Response: 20Hz~22kHz +/- 1dB SNR: 90dB Transmission Delay: 9mS Sampling Rate: 48KHz Bit Depth: 24 bits Maximum Transmission Distance: 15-20m without obstacles, 10-15m with obstacles or high noise Charging Input Voltage: DC4.8~5.4V Receiver: Plug-and-play, no charging needed Transmitter Details Battery Type: Lithium battery Working Hours: About 4~5 hrs on a full charge Battery Capacity: 85mAh 3.7V Charging Time: About 1 hour (5V/1A) Size: 8 x 1.5 x 1cm (3.1 x 0.6 x 0.4 inches) Weight: 8g Receiver Details Size: 5 x 2.5 x 0.8cm (2 x 1 x 0.3 inches) Weight: 4g Note Please be aware that due to variations in display screens and lighting conditions, the actual color of the item may differ slightly from the images shown. Packing List 1 x Transmitter 2 x Receiver 1 x Type-C Audio Conversion Cable 1 x Audio Conversion Cable 1 x Type-C Charging Cable