Qualcomm QCC3020 High-performance Bluetooth 5.0 Chipset. This module equipped with Qualcomm QCC3020 chipset for fast and stable connection. It supports APTX / AAC /SBC codecs and Apple AAC and Android apt x codecs. Both are high-definition Bluetooth codecs with higher sound quality and lower latency. With this module, you can experience superior sound via Bluetooth audio streaming DSP Enhanced Noise Reduction Technology. BT20S Pro built-in high-sensitivity microphone reduces environmental noise through DSP noise reduction technology, suppress background noise and reverberation for a quiet, seamless user experience. And designed to fit a variety of earphone connectors, TRN-BT20S Pro makes switching earpiece a breeze. Indeed, an“all-in-one" solution Customized FPC Bluetooth Antenna. Flexible printed circuit board (FPC) antenna provides exceptional reception and transmission in a relatively small pattern that brings robust overall connectivity when making calls or listening to music, as well as an easier pairing experience Build Quality Bluetooth Module for Any Type Of Earphones. This module has an aluminum alloy button with “One- Touch” smart control. This button ensures longevity and wear resistance. High-glossy polished edge with exquisite finish, give you a soft tactile feeling while working. Thermoplastic elastomer flexible earhooks is a tough yet flexible material that ensure proper fit around the ears. It is soft, hypoallergenic, able to withstand climatic heat, body sweat, continuous bending and reshaping. 72 Hours Non-stop Music Playback. BT20S Pro allows 9 hours of playback per charge, up to 72 hours when used with portable charging case. Instantly transforms any earphone to have wireless HiFi capabilities. BT20S Pro converts any dynamic, balanced armature or hybrid earphone into a total wireless Bluetooth solution. Stable yet lightweight, free from dangling wire or tangled cable. Enjoy high-fidelity and high-definition sound anytime, anywhere.