• Up to 35dB hybrid active noise cancellation - Effectively isolate excess outside noise: With hybrid active noise cancellation technology, the feed-forward and feedback microphones work together to effectively separate background noise. Whether you're outdoors, on the bus or metro, one-touch for up to 35dB noise cancellation. Redmi Buds 4 Wireless Earbuds blocks out the hustle and bustle
• 3 ANC level options and adaptive ANC mode - Just the right level of quietness: Intelligent scene judgement based on ambient noise levels. Redmi Buds 4 Earbuds intelligently switches between 3 ANC levels under adaptive mode supported by AI algorithm and offers a more comfortable noise-cancellation experience
• Redmi Buds 4 ANC Earbuds - AI noise reduction - Get every word across clearly: The AI voice algorithm accurately differentiates human voice and ambient noise, so that even in the noisy environments, the listener will hear every word you say, loud and clear
• Dual transparency mode - Simple communication even with your earbuds on: Want to switch between Music Mode and Chat Mode? Long-press to enter transparency mode and feel free to say hi to friends around you. Set up enhance voice mode for natural communication with your earbuds on.
• 10mm dynamic driver, 0.006mm ultra-thin diaphragm - Pleasant to listen to vivid vocie and instrumental sound: The large dynamic driver unit makes the voice sound crisper, the lower frequencies fuller and the treble brighter. Choose a high-quality 0.006mm diaphragm to bring out even more detail in your favourite music
• Up to 30 hours extra-long battery life with case - Surround yourself with your favourite music: Enjoy up to 6 hours of battery life on a single charge and up to 30 hours of battery life when paired with a charging case, so you can enjoy great music both day and night. Fast charge supported. Get up to 1 hour of music playback from 5 minutes of charging. Take a break and then pick up right where you left off

Specifications:

• Product model no.: M2137E1
• Earbud input parameters: 5V⎓ 100mA
• Charging case input parameters: 5V⎓ 450mA
• Wireless connection: Bluetooth 5.2
• Bluetooth protocols: HSP, HFP, A2DP, AVRCP
• Operating distance: 10m (open space free of obstacles)
• Single earbud net weight: Approx. 4.5g
• Total weight including charging case: Approx. 55g
• Charging port: Type-C
• Speaker impedance: 16Ω±15%