Feature: 1. BT transmitting receiving 2-in-1 design, it converts wired audio into BT signals and transmit to BT devices, or receives BT signal and transmit to wired audio via BT. 2. Built-in BT5.0 chip, faster and more stable transmission, low latency, wide compatibility. 3. Equipped with external antenna, stronger signal, up to 15m transmission distance. Specification: Features: BT transmitting receiving 2-in-1 design, it converts wired audio into BT signals and transmit to BT devices, or receives BT signal and transmit to wired audio via BT. Built-in BT5.0 chip, faster and more stable transmission, low latency, wide compatibility. Equipped with external antenna, stronger signal, up to 15m transmission distance. It can convert digital audio to analog audio signal. Optical fiber+Coaxial+3.5mm AUX input interfaces, can connect TV, computer, smartphone, speaker, power amplifier, etc. Indicator lights design, you can know the working status at a glance. Specification: Type: BT receiver transmitter&DAC audio converter Color: Black BT version: V5.0 Transmission distance: Up to 15 meters(open area) Input: 1*3.5mm audio, 1*Toslink, 1*Coaxial, 1*BT Output: 1*3.5mm audio, 1*RCA R/L, 1*BT Supported BT protocol: A2DP, AVRCP Item size: 11.4 * 5 * 2.1cm /4.49 * 1.97 * 0.83in Item weight: Approx. 103.3g /3.64oz Packing list: 1 * Converter 1 * Data cable 1 * RCA cable 1 * Optical fiber cable 1 * User manual Package List: 1 * Converter 1 * Data cable 1 * RCA cable 1 * Optical fiber cable 1 * User manual