BX501 2.4GHz ISM band wireless audio adapter is designed to wirelessly transmit high quality music at 2Mbps super speed. 50 meters ultra far distance free transmission range with real-time digital encoding technology, which ensures low-latency. Non-interfering 16 channels with memory function, strong coexistence. With buil-in 320mAh li-poly battery in sender box and charging protective circuit in both boxes, crystal clear indicator lights display working and charging status. It is the perfect portable wireless audio adapter for the home entertainment, business meeting and various outdoor activities' wireless devices expansion. Features: 2.4GHz ISM Band Wireless Transmission Technology Efficiently transmit music from the computer, TV, smart phone, laptop, DVD player, tablet and more to home audio stereo music streaming sound system, headset or speaker, you could enjoy HiFi stereo audio without audio cable connected directly, conveniently and reliable. Good mate for teaching & outdoor lectures, business presentation, music party etc. 16 Channels with Strong Anti-interference 16 channels with memory function, multiple choices. With unique frequency selection technology & digital error correction algorithm, which can intelligently choose the clear channels, improving anti-interference and sound quality. 50 Meters Far Distance Transmission Support as far as 50 meters free wireless transmission, strong signal reception, ideal wireless expansion adapter for the signal extension of existed wireless devices. Low-latency with High Fidelity Sound Lower signal delay, adopt ultra-low latency real-time digital encoding technology, which maximizes wireless signal transmission speed, enjoying latest movie, video, TV play and more with 360immersive sound in perfect audio video synchronization. 44.1kHz, 16Bit sampling rate and 2Mbps transmission rate protect signal from attenuating during wireless transferring process, instantly gain high fidelity sound through receiver box. High Security and Easy Installation The wireless sender box and receiver box had been paired in the manufacturer, just plug and play, then enjoying stereo audio anytime and anywhere. Excellent security, if need to protect transmission confidentiality, you can choose address code pairing operation, system will randomly generate a series of 40Bit address code, global only. 40Bit address code verification provides top confidential performance. Perfect for Outdoor Activities Compact size, elegant in shape, easily to be carried anywhere. Lower power consumption than similar or competing products, highly compatible with almost all USB power adapters. Small size and for wide outdoor applications. Specification: Model number: BX501 Material: ABS + Metal Color: Grey + Black Carrier frequency: 2.4GHz Modulation method: GFSK Transmission rate: 2Mbps Transmission power: +10dBm Channels: 16 Channel spacing: 5MHz Working distance: 50 meters / 164 feet(outdoor open area) Receiver: Input signal effective value: 1Vms Input impedance: 10Kohm Output / input gain: 1:1 Frequency response: 20Hz~20kHz (-3dB) Transmission delay: