35dB active noise cancellation 3 settings available for adjustments* Fast charging Use for up to three hours after charging for ten minutes Dual-device smart connectivity Compatible with multiple systems Wireless charging Charging starts when the case is within range AI scene judgement Adjusts the depth of adaptive noise cancellation* Dual transparency mode Allows you to converse freely while wearing the earbuds* 9mm composite vibrating diaphragm coil Tuned by Xiaomi’s internal sound lab 28 hours total playback Up to 28 hours long listening with case