Dudao U21 TWS ANC ENC Bluetooth Wireless Headphones - Black The Dudao U21 TWS Wireless Headphones are a combination of modern technology, comfort and clear sound. Equipped with a dual ANC + ENC noise cancellation system, they effectively eliminate ambient noise, so you can enjoy your music in full focus. Long operating time and energy-saving technology make them perfect for everyday use. The lightweight design ensures comfort even when worn for extended periods of time. It's a reliable accessory that will enhance the quality of your calls and music listening in all conditions. ~ Specification: Brand: Dudao Model: Dudao U21 Bluetooth Version: V5.4 Bluetooth Range: ≤10m Bluetooth Chip: Jieli 7003D8 Frequency Response: 20 Hz - 20 KHz Driver: Ø13 mm, 32 Ω Headphone Battery Capacity: 30 mAh Case Battery Capacity: 300 mAh Standby Time: Approx. 20 h Music Playback Time: Up to 4 h (at 80% Volume) Talk Time: Up to 2 h (at 80% Volume) Input: USB-C DC 5 V = 1 A Case Charging Time: Approx. 2 h Earbuds Charging Time: Approx. 1.5 h Color: Black ~ Key Benefits Dudao U21 TWS ANC ENC Bluetooth Wireless Earbuds - Black: Dual ANC + ENC Noise Cancellation: Effectively blocks up to 99% of ambient noise for clear sound. Long Battery Life: The 300mAh battery of the case and 30mAh headphones allows you to enjoy music and calls for hours. Stable Bluetooth 5.4 connection: guarantees fast pairing and reliable transmission. High sound quality: Ø13 mm drivers deliver rich sound and crisp tones. Compact and lightweight design: convenient to use, easy to carry and charge in the case. ~ Advanced ANC + ENC Noise Cancellation Active and passive noise cancellation technology effectively cancels noise, allowing you to fully enjoy your music and calls without interruptions. Long Battery Life The 300mAh charging case and 30mAh battery earbuds offer up to 20 hours of standby time and hours of music playback. Stable Bluetooth 5.4 Connection The modern Bluetooth 5.4 standard ensures fast pairing, smooth audio transmission, and reliability in daily use. Ø13 mm drivers - clear sound Large drivers guarantee dynamic, detailed sound across the full frequency range from 20 Hz to 20 KHz. Compact design and comfort The ergonomic design and lightweight case make the headphones practical for everyday use and easy to take on the go.