MR275 Bluetooth 5.0 Transmitter for TV Optical & Coaxial,RCA & 3.5mm Jack Audio Adapter Wireless Bluetooth Audio Transmitter for Headphones/TV/PC aptX Low Latency& aptX HDFeatures:1. Dual Link Transmitter: One portable adapter to use as Dual Transmitter,pair to 2 bluetooth headphones or speakers at once.Dual aptx connection is supported. 2. Optical & Coaxial and 3.5mm Audio Connection: You get maximum flexibility with support for 3.5mm (AUX and RCA), Optical output and Coaxial output . 3. Low Delay: aptX Low Latency technology eliminate Bluetooth audio delay, so you can watch TV / Movie / Video and listen to high-clarity sound in perfect synchronization.4. AptX_HD: 24-bit 48Khz HD audio transmission allows you to enjoy high-quality sound. Beyond CD Sound Quality. 5. Constant Streaming and Automatic Re-pairing: Internal battery provides up to 15 hours of using, support charging and streaming at the same time, and automatically re-pair with existing paired devices. 6. Make Non-Bluetooth Device Wireless: keep your old stereo or wired headphone alive with new Bluetooth wireless connection, pair with smart phone or tablet from up to 30 feet away, and enjoy great music cable-free.Specification:Bluetooth Profile: A2DP, AVRCP, PBAPWireless Work Range: Up to 15mSupport aptX :aptX,aptX_ll and aptX_HDPower Input: DC5VOutput: 3.7V/400mA Working Time: Up to 15hoursPackage contents:1 x 3.5mm Audio Cabe1 x Micro-usb Charging Cable1 x User Manual1 x MR275 Bluetooth Transmitter