【Advanced Active Noise Cancelling Technology】Reduced noise, better sound. Hear every word, note, and tune with incredible clarity. Whether you are taking a long-haul flight or commuting to work, the ANC function can cancel out a wide range of low and mid frequency noises such as the aviation environment and car engines, so you can focus on what you want to hear. 【Strong Bluetoooth 5.4 Tech & Wired Connection】Introduces a new connection Bluetooth 5.4 to our over-ear headphones which can offer a faster and more stable data transmission, ensuring your tunes without being tethered to your device. You can also use the headset by connecting it to the 3.5 mm audio jack, providing you with the sound you need for different scenarios. 【Optimized Sound Quality with 3 EQ Modes】JOMILIN is always up to date for better sound effects and a better listening experience. The EQ button allows free switching among three preset EQ settings to meet the listening requirements of different music styles. The headphones with microphone ensure Hi-Fi sound calls, making your conversations clearer. [All-day Comfort Adjustable & Foldable Design] JOMILIN C5 uses ultra-soft protein leather earcups, which allows you to wear it for a long time without feeling uncomfortable. The earmuffs can also automatically adjust the angle to suit users with different head shapes. Making them the ideal headphones to work from home or watch your favorite movie. The foldable and lightweight design allows you to fold and place the headphones anywhere, you can easily fold the headphones into carrying bags and travel cases, taking up less space in your backpack, which are perfect for travel, sports and everyday use. 【ANC headset , After Sale Protection】: Package includes ANC Noise Cancellation Bluetooth headphones,3.5mm backup audio cable, USB charging cable, User Manual and Travel protective storage bag. JOMILIN dedicated to providing high quality products with excellent after-sale service. 365-days Hassle Free limited Protection and quick response customer Service. If you have any question, contact us and we'll get back to you within 12 hrs. Wireless headphones