The most cost effective bluetooth transmitter / receiver on the market - Bluetooth 5.0, APT-X HD, APT-LowLatency The most important features: Minimalistic and professional appearance of the device. High fidelity and lossless quality of ultra-low latency wireless audio transmission. High-end CSR8670 IC with APTX LL, APTX HD, SBC, AAC, FS support. Switch between RX and TX modes with one button. RCA and I2S audio input / output interface that can be freely switched. Two antennas ensure a long distance of Bluetooth operation, with high signal stability. Built-in rechargeable battery with a capacity of 500MAH allows you to work without power connection for a few hours. Supports two-stream transmission (TX mode). You can connect two Bluetooth audio devices (e.g. headphones). In the Receiver (RX) mode, it can also connect two devices at the same time, e.g. two mobile phones, tablets. Product connection is simple, no additional drivers or application downloads required. Mozos B2 create a wireless hi-fi audio environment. Top-quality CSR8670 chipset with codec support in TX mode: apt-X LL, aptx HD, apt-X, SBC, FS; and RX mode: apt-X LL, apt-X ， SBC, AAC, FS. This unit is a guarantee of the highest quality audio in Bluetooth 5.0. Thanks to two operating modes, the use of Mozos B2 is almost unlimited. For example, you can connect your Bluetooth headphones to a TV that does not have such an interface. You can wirelessly send the sound from the projector to the home theater (Bluetooth equipped). You are really only limited by your imagination. Thanks to the use of two antennas, the range of our device is much higher than that of competing solutions. The use of the latest interfaces and codecs for lossless audio transmission ensures high signal stability in both residential and home conditions. Mozos B2 is also equipped with a convenient Bypass function - it easily switches between a wired connection (e.g. soundbar) and Bluetooth without the need to unplug the wires. This function is especially useful when you have a limit on the number of outputs, e.g. on a TV that is occupied by a receiver, for example. Switch between BYPASS and Bluetooth mode with the switch without having to plug and unplug Mozos B2 every time. Ease of use and high mobility. Mozos B2 is very intuitive to use. You can change the operating mode with one button. The transmitter, the B9 receiver can be easily and quickly paired with new devices. What's also important Mozos remembers paired devices and reconnects quickly. Qualcomm APTX-LL codecs in addition to providing minimal audio delays, it also allows you to connect up to 2 headphones at the same time. You can watch the TV loud, play the console on 2 pairs of headphones without disturbing the rest of the household. Mozos B9 is equipped with a 500MAH battery which, depending on the selected mode, provides from 8 to 10 hours of wireless operation (RX> 10H, TX> 8H). You charge the battery via the classic USB port. You can connect the device itself using an RCA or AUX cable. These are universal standards that you will meet in most devices available on the market. The product will automatically enter the power saving "sleep" mode after 6 minutes of no signal in RX and TX mode. The intelligent system minimizes electricity bills and at the same time protects the battery from excessive discharge. Note on using APTX: Priority support for apt-X LL codec in a single connection (connected device must also support apt-X LL). Technical Specifications: Bluetooth version: V5.0. Operation frequency: 2.402GHz-2.480GHz. Rated power: Class I II. Distortion: 0.1%. Chipset: Quoalcomm CSR8670. Dual streaming support (TX mode): Support (the transmitter is connected to two Bluetooth speakers or headphones at the same time to use the APTX LL codec). Multipoint support (RX mode): Support (eg. connect two mobile phones). Codec support: TX: apt-X LL, aptx HD, apt-X, SBC, FS; RX: apt-X LL, apt-X (SBC, AAC, FS). Built-in battery: 500 mAh Charging current: about 350 mA Charging time: about 2.5 hours Battery Life: RX up to 10H, TX up to 8H. Bluetooth operation range: up to 80M (straight line without obstruction). Charging current: Micro USB 5V / 0.5A. Input / output connection method: RCA interface, I2S AUX interface. Compatibility: Android, IOS mobile phone (A2DP support required). Weight: about 70g Size: 11 * 9 * 2.5cm