【Supported Audio Format Files】 SBC / AAC / APTX / APTX LL / APTX-Adaptive / APTX HD. | 【Low Latencyand High Sound Quality】 With his high-end integrated Qualcomm chip, the product has lossless sound quality, low delay and high compatibility. Adopting Bluetooth 5.2 chip, power consumption is reduced and transfer speed is even faster than the previous version. | 【Transmission mode (TX)】Easily make a sound source such as a Car/PC/MP3 that does not support Bluetooth connection wireless, and play it with Bluetooth earphones.Unique design style that supports encoding and decoding switching when Transmission mode (TX). | 【Reception mode (RX)】When you want to connect a wired earphone or speaker wirelessly, it becomes wireless instantly through the receiver mode, and you can enjoy music such as a smartphone equipped with Bluetooth wirelessly. | 【Connect two devices at the same time】The AK3040C bluetooth 5.2 transmitter can connect two Bluetooth headsets at the same time, and both Bluetooth headsets can output sound at the same time (low latency) technology. | 【Long-time playback】With an indicator light, you can easily see the continuous status. It takes about 2 hours to fully charge. Bluetooth5.2 transmitter The receiver can be used continuously for 12 hours or more. | 【Multi-model Support】Applies to models with bluetooth function and 3.5mm audio output jack. Models such as iphones/Android smartphones, Bluetooth headphones, tablets, Airplanes, Boats,PCs, stereos, and in-vehicle stereos are also applicable. | 【Ready-to-use, plug and play】The Bluetooth car adapter Aux is designed with a TR / OFF / RX slider switch, and when the slider switch is turned on, it automatically switches to paring mode. Plug, pair, play. It just works. | 【Package contents】eppfun AK3040C transmitter (frequency band: 2402MHz to 2480MHz, communication distance: maximum 10m), USB-C cable, AUX cable (3.5mm). | 【Warranty】We value your shopping experience and offer an 18-month warranty. If you have any questions, please feel free to contact us. We will handle your concerns for you as soon as possible.