NOTE: Before purchasing, please make sure your phone supports USB-C / Type-C audio output. Note: Make sure your phone has the function of transmitting audio through the USB Type C port. If you have a phone with a 3.5mm mini-jack connector, headphones with a USB Type C connector won't work with it. The headphones also do not work with Samsung phone models such as: the entire Galaxy S22, S20, S21, Note 20, 21, S10 series. XO EP27 are wired in-ear headphones for smartphones with a Type-C jack, not equipped with a 3.5 mm jack. The flexible silicone cord ensures as long a time as possible. Product Specifications: Built-in microphone and remote control Driver unit: 2x10mm. Frequency response: 20 Hz ~ 20KHz. Impedance: 32Ω ± 20% at 1 kHz. Sensitivity: 102 ± 3dB. Distortion: 3% at 1kHz 1 mW. Connector: Type-C, USBC Cable length: 1.2M Premium sound quality