<b>⭕[GOOD SERVICE]</b> One email solves all problem, no trouble, no shirk. We are very kind and honest. If you don't like this product, email us, we refund, return not necessary. Trust us, we will solve any problem simply and efficiently.<p><b>⭕[HIGH CONFIGURATION CHIP]</b></p><p>Built-in Realtek ALC-5686 advanced digital audio processing chip, 32-bit stereo audio DAC, 384khz sampling rate, active noise reduction, gives you Hi-res sound performance. Conversion distortion is less than 0.1%.</li></ul><p><b>⭕[CLEAR AUDIO MUSIC & CALLING]</b></p>High Resolution Audio by DAC is pure without any unpleasant bottom noise. With a higher dynamic range and good Signal Noise Ratio, it can ensure good resolution in both low-frequency and high-frequency, and accurately reproduce all details in music. Good high frequency extension performance. The medium frequency is clean and full, with flexibility and strength, the voice is friendly and natural. The low frequency is thick and heavy, giving you a powerful pleasure.<p><b>⭕[COMPATIBLE WITH]</b></p>This USB C Earbuds is digital output, only support usb c digital output device. Specailly designed for USB-C phones without 3.5mm audio port. Support remote control and low noise calls.<ul><li>For iPad pro (2020) 11 & 12.9 -[A2232, A2230, A2229, A2228, A2069, A2068] & iPad Air 2020.</li><li>For iPad pro (2018) 11 & 12.9 -[A1980 A2013 A1934 A1979 A1876 A1895 A2014 A1983].</li><li>For Samsung Galaxy S21 S20(Ultra, FE 5G), Note 20 10(Ultra & Plus), Z Filp, Z Fold 2, A80, Tab S5e/S6.</li><li>For Google Pixel 2, 2XL, 3, 3XL, 3A, 3A-XL, 4, 4 XL, 5, 5XL.</li></ul></p><p><b>⭕[Parameters]</b></p><p>1.Drivers: 12mm; 2. Diaphragm: Composite Membrane; 3. Frenquency Response: 18-25000HZ; 4. Impedance: 20Ω; 5. Sensitivity: 112db; 6. Signal Noise Ratio (SNR): 120db; 7. Total Harmonic Distortion (THD): Less than 0.1%.</p>