Fiber Optic Bluetooth-compatible 5.0 Audio Transmitter Receiver 2-in-1 Wireless Bluetooth-compatible Adapter One Connects Two Audio Adapter This two-in-one BT receiver and transmitters can help cable devices and BT devices connect, providing users with a fine-quality experience.High fidelity audio output interface, optical fiber interface + 3.5mm audio interface + RCA red white conversion interface, easy to realize different power amplifier audio equipmentBT transmission mode (TX): it can convert cable audio into BT signal, transmit it to BT device for output, and help to connect the computer's TV with BT speaker, BT headset, etc.BT receiving mode (RX): it can also receive BT signal and transmit it to wired audio through BT signal connection, such as connecting BT mobile phones with speakers, power amplifiers, etcIt can be connected to the TV, and transmit the sound to the headset through BT to watch the TV, so as to avoids affecting other people's rest. (in TX mode)Connect the audio 3.5mm audio interface, the speaker without BT function can also play wirelessly. (in RX mode)Support one connects two functions, can link two BT headsets, share the same music or watch the same movieLong battery life, it can be used while chargings, which is convenientLong-distance transmission, in the case of no obstruction, can be transmitted freely in the ranges of about 10mHigh-performance BT chip, stable transmission, strong signal, low delay, fine quality sound qualitySmall size, easy to carry, plug and plays, easy to useLED indicator light can show different working statesSpecifications:Material: metal+plasticsBattery: 3.7V, 300mAhOutput interface: 3.5mm audio + fiber opticalWorking ranges: 10m (without any obstacles)Chargings times: about 2hUse times: TX mode: about 8h, RX mode: about 7hFrequency ranges: 2.402GHz ~ 2.480GHzItem size: 64.58 * 64.58 * 18mm / 2.5 * 2.5 * 0.7inItem weight: 48g / 1.7ounceInstructions:1. Connect the optical fiber port or AUX interface of the