Supported Audio Format Files: SBC / AAC / APTX / APTX LL / APTX-Adaptive / APTX HD. 
Qualcomm APTX Low Latency : With the high-end integrated Qualcomm chip, the product has lossless sound quality, low delay and high compatibility. and achieves excellent audio and low latency with aptX-Adaptive, APTX HD and aptX-LL codecs, when watching movies , You can enjoy it without feeling the delay of voice. 
ADVANCED Bluetooth 5.2 More Stable, More Reliable: Engineered with the latest Bluetooth 5.2 technology featuring four times the range, two times the speed of older versions of Bluetooth, and it can deliver more stable wireless to your devices. 
Transmission Mode (TX): sound source for TVs that do not support Bluetooth connection. Easily make it wireless and let it flow with Bluetooth earphones. 
Receive Mode (RX): When you want to connect a wired earphone, speaker, etc. wirelessly, it becomes wireless instantly through the receiver mode, and you can enjoy music such as a smartphone equipped with Bluetooth wirelessly. 
Dual Connection: The Bluetooth Transmitter can connect two headphones/earbuds at the same time, Dual-link aptX LL technology makes it possible to support aptX LL with two headphones at the same time. Even two people can enjoy late-night TV. 
Convenient Function: Equipped with various buttons that can play / stop music, adjust volume, forward / backward music, etc., and can be easily operated in receiver mode. You can set to mute mode with one touch when in transmitter mode. 
LED indicator is attached to the main body, so you can see the connection status and compatible codecs at a glance.
Package Contents: eppfun AK3046C transmitter (frequency band: 2.402GHz -2.480GHz, charging time: about 2 hours, communication distance: up to 10m), USB-C cable, AUX cable, RCA cable, color: black , Body width x depth: 48 mm * 48 mm, Body weight: 24.5 g.
Up to 12 Months Warranty.