DescriptionNOTED: Its because of sonys Bluetooth headset/earphone/headphone uses a special encoding method, its not public for other devices to connect.So when you use sonys Bluetooth headset/earphone/headphone to pair with our devices in bluetooth transmitter mode, it may takes longer time to pair.The pairing time varies on different model of Sony . But they can surely pair successfully with our devices. Support auto turn ON functionality when connected to power, Suitable for any devices(smartphone,earphone,speaker etc) any version of Bluetooth on the market, including: bluetooth 1.0/1.1/1.2/2.0/2.1/3.0/3.1/3.2/4.0/4.1/4.2/5.0 etc. (APTX HD & APTX LL LOW LATENCY)VAORLO Bluetooth transmitter receiver adopted newest CSR8675 chip and bluetooth 5.0 tech, support APTX HD and APTX Low Latency. APTX HD -- you can enjoy a real HD Stereo Sound Quality. APTX Low Latency -- reduce audio lag to undetectable levels making it ideal for watching TV/movies. (WIDE APPLICATION)The Bluetooth Receiver & Transmitter Adapter is equipped with optical audio, 3.5mm Aux or RCA which make it wider application. It can work with mobile phones, TV sets, TV boxes, MP3, MP4, speakers, wired headsets, Bluetooth headsets, notebooks, amplifiers, car speakers, and Bluetooth Speaker or Headphone, and take you a perfect experience. (INTELLIGENT LED DISPLAY)The led indicated of Bluetooth Transmitter can clearly dispaly the connecting condition of device, which makes it easy to use. aptx HD: flash 4 times every 5 seconds. aptx LL: flash 3 times every 5 seconds. aptx : flash 2 times every 5 seconds. SBC: flash 1 times every 5 seconds. (20 H LARGE BATTERY & LOW CONSUMPTION)Built-in 600MAH lithium polymer battery, the Bluetooth Aux Audio Adapter can work more than 20 hours, you can use while charging. The distance of wireless is 10m, free cable use. When the power is lower than 20%, there will be a low battery alert. After 10 minutes without connection, the product automatically enters the sleep power-saving mode. (DUAL LINK)The bluetooth transmitter adapter can connect with two bluetooth headphones or speakers simultaneously. Both the receiving mode and the transmitting mode can realize automatic back-to-back connection, the connected product has a memory function. (PAIR WITH EACH OTHER)Support work with each other, One as a transmitter, the second - as a receiver. Technical specifications:Bluetooth version: V5.0, Class IIBattery: 600mAH rechargeable lithium batteryNet weight: about 48 gSize: 65 x 65 x 17mmOperating time in receiver mode: 18 hoursOperating time in transmitter mode: 22 hoursCharging time: 3 hoursTransmission range: 10 m(open area)Audio coding:TX: aptX HD, aptX Low latency, aptX, SBCRX: aptX HD, aptX Low latency, aptX, SBC, ACC Package contents:1 x Bluetooth Transmitter/Receiver Adapter1 x Micro USB charging cable1 x 3.5mm audio cable1 x 3.5mm jack to 2 RCA plug cables1 x Digital Optical Toslink Audio Cable1 x user manual Notes: 1.Charging is necessary for first use. It can be fully charged for about 3 hours. The LED lights up red during charging and turns off when it is fully charged. 2.The optical terminal and AUX terminal can not be used at the same time. Please note that digital output can not be done simultaneously when digital input.3.In order to use aptX HD and aptX LL, your Bluetooth headphones and speakers need to have aptX HD and aptX LL function. Otherwise, codec will automatically be aptX or SBC. DISOUR Bluetooth 5.0 Transmitter Receiver, 2023 Upgraded 2-in-1 Wireless aptXHD Low Latency Bluetooth Audio with Display Screen, 3.5mm & Optical Adapter for TV/Home/Car Stereo System(Pair 2 Devices)