1. Built-in Bluetooth version 5.0 transmitter and receiver, using high-tech Bluetooth module, the receiving mode supports the connection of mobile devices such for mobile phones and iPads. 2. Support aptX HD, aptX HD audio can ensure that compatible Bluetooth devices provide high-definition (HD) audio. It will preserve sound data throughout the audio transfer process, resulting in a "better than CD" listening experience. 3. No lip-sync delay and support for APTX low-latency codec, which almost eliminates audio-visual delays, making our product Perfect for watching TV/movies. For best results, use it with headphones/speakers that support aptx low latency. 4. Type-c connection interface conforms to European socket standards, and can be easily connected for recording/playback/live broadcast. 5. 3-stage EQ adjusts the tone, and adjusts the high, middle, and bottom tones, which can be more delicately adjusted to suit your equipment and the sound quality that suits your personal preferences. 48kHz DAC, supports signal conversion from digital optical coaxial audio to RCA 3.5mm analog audio. High-quality headphone monitoring interface, individually adjust the required sound. Easy to use, the product features connection status/audio decoder indicators and is easy to set up and use. Compatible with all devices with optical coaxial output interfaces, such as TVs, DVDs, game consoles, stereos with RCA, 3.5mm input interfaces, headphone devices. Material: Aluminum alloy colour: Black Package Contents: 1 x Digital to analog converter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.