Advanced Qualcomm CSR8675 Bluetooth Chip. CSR8675 is a multi-functional Bluetooth chip sup-porting for aptX, 24-bit audio, aptX HD, active noise cancellation and Qualcomm True Wireless stereo for high resolution audio performance that is comparable to wired. High Performance AMP Chip. The awesome MAX97220 amp chip is specially selected to match Qualcomm CSR8675 Bluetooth chip for their highly compatibility. Low distortion and noise. Tuned with Hidizs' years of acoustic experience for tuning, H2 inherits Hidizs' classic HiFi style, three-frequency balance, big soundstage. Bluetooth 5.0 Faster Smoother and More Stable. Compared to Bluetooth 4.2, the 5.0 technology represents the greatest advancement in the range, speed, and broadcast messaging capacity of Bluetooth applications. Hassle-free connection,lag-free audio and perfect synchronization. NFC One-Touch Pairing. Connect your mobile phone to H2 just with the user-friendly one-touch NFC technology, without complex manual pairing or connection. Compact But Powerful. UAT-Ultra Audio Transmission, UAT is an all-new Bluetooth audio codec developed by HiBy. Supporting an industry- highest sample rate of 192kHz at an industry- highest data bandwidth of 1.2Mbps, even adapt and optimize itself to different music genres. cVc Noise Cancellation Technology. Thanks to 2-mic Qualcomm® cVc™ 8th Generation Noise Cancellation Technology with wideband speech,your demand for high-quality HD voice calls will be met. Technical Specification : Bluetooth Codecs : LDAC / aptX HD / aptX LL / aptX / AAC / SBC Body Material : German Makrolon Resin Housing Output Port : Single Ended 3.5mm Battery Capacity : 160mAh Output Power : 8mW + 8mW @32Ω Frequency Response : 20Hz - 90kHz SNR : 92dB