Purchase Notes: -----Powered By USB Charging (No built-in battery ) -----Two-in-one function, support receiving and transmitter functions, without microphone. -----Support Dual Stream,Multipoint Connect. Bluetooth transmitter function,can connect 2 Bluetooth headsets at the same time.(Use the same bluetooth headset/speaker, the effect will be better) Bluetooth receiver function,can connect 2 smartphones. -----It is just a VAORLO 2 in 1 bluetooth audio transmitter receiver. Can only be used for audio transmission, so you can't use it for your keyboard, mouse, file transfer. ---The function of the bluetooth transmitter is to add a bluetooth function to devices without bluetooth function such as TV/computer, so that they can connect to bluetooth speakers/headphones. This is a Bluetooth transmitter buit with the newest technology , it wouldn't show in the Bluetooth devices in your phone,computer or TV and you only need to make the Bluetooth devices close to this Bluetooth transmitter then they will connect with each other automatically. ---The function of the Bluetooth receiver is to add Bluetooth wireless function to the wired speaker/headphone, so that the Bluetooth-enabled device such as the mobile phone can be wirelessly connected to the wired speaker/headphone through the adapter. Product Features: ●2 in 1 Bluetooth 5.3 Audio Adapter: The Vaorlo Bluetooth-5.3 audio transmitter receiver can transmit audio from non-Bluetooth-compatible audio sources (TV, PC, MP3, CD player or book reader, etc.) to Bluetooth-compatible headsets and speakers. And you can also make your non-Bluetooth-compatible headsets and speakers receive audio from Bluetooth-compatible audio sources (mobile phones, tablets, etc.). You can easily switch between transmitter and receiver modes with the push of a button. ●Support Dual Stream,Multipoint Connect: Bluetooth transmitter function,can connect 2 Bluetooth headsets at the same time. Bluetooth receiver function,can connect 2 smartphones. ●Auto On: When you connect to the power, So its very good for to use in car or other you want it have auto on functions. ●Easy to Use: Just tap the switch to switch between transmitter and receiver modes. Easy connection using advanced Bluetooth technology and 3.5mm audio cable (included) and 2RCA Audio Cable. ●Bluetooth 5.3+EDR: By inserting a Bluetooth adapter into a non-Bluetooth-compatible device to achieve wireless connection with various Bluetooth-compatible devices. It can be stably connected to TVs, stereos, PCs, MP3s, cars, speakers, earphones, smartphones, tablets, and reaches a maximum range of 50 feet (15m) outdoors and a maximum range of 33ft (10m) indoors. ●Space-Saving Design: Ultra-compact and lightweight for convenient use with a variety of devices. ●Auto-Connect: This Bluetooth Adapter will automatically connect to the last paired Bluetooth device when you turn it on the next time. ●Super Stable Connection: Our Bluetooth audio adapter is fitted with a Bluetooth 5.3 chip for steady pairing, fast transmission and a wide signal range (33 feet). With the 3.5mm AUX port and 2 RCA port, it can be connected to non-Bluetooth car audio systems, home stereo, wired headphone/speaker, Amplifier/Home Theater.etc. Then you can enjoy wireless Hi-fi music streaming! ●Receiver Mode For: Car Kit/Wired Speaker/Home Speaker/Speaker Power amplifier/Headphone ect... ●Transmitter Mode For: TV/PC/Projector/Power amplifier/TV Box /Bluetooth Headphone/Earphone/Bluetooth Speaker ect... ●USB Power Supply: THe USB has a power supply function. During use, power must be supplied through USB ports (such as power adapter, PC, car charger, and other USB ports). As long as the receiver of the Bluetooth transmitter is powered on, you don't have to worry about running out of power while listening to music. (We recommend that you use a 5V1A charger to power this adapter to avoid insufficient voltage and current, which will cause the adapter to produce current sound during use.) Product Specification: Type: Multipoint 2-IN-1 Bluetooth Audio Adapter Colour: Black Input Voltage: DC 5V Transmission Distance: Maximum of 10 meters/33 feet (no obstacles) Bluetooth Version: 5.3+EDR Interface: 3.5mm AUX Stereo/ 2 RCA Stereo Audio / Mode Switching: Switch the mode by switching the Button TX/RX switch. Size: About 110x26x60mm Range of Use: This Bluetooth adapter can be used in almost all digital products with audio input/output (3.5MM/2RCA audio interface), just connect the audio to the input/output port. Receiver Mode For: Wired Speaker/Home Speaker/Power amplifier/Headphone/Car kit ect... Transmitter Mode For: TV/PC/Projector/Power amplifier/TV Box /Bluetooth Headphone/Earphone/Speaker ect... Package Included:(Standard Edition) 1x Multipoint 2-IN-1 Bluetooth 5.3 Audio Adapter 1x 3.5mm Aux Cable 1x TypeC Charge Cable 1x RCA Cable 1x User Manual Notes: Powered By USB Charging (No built-in battery )