True wireless Bluetooth in ear stereo sports long intelligent noise reduction headset About this item Immersive Sound Through Targeted Active Noise Cancellation - Built-in microphone provides enhanced noise cancellation allowing down to -38dB. works even without songs being played IP54 and water proof. True Headphones are suitable for a variety of indoor and outdoor activities. a rainy day or a sweaty workout, dry before charging AAC audio decoding: support audio App control control: custom control and adjust sensitivity, adjust ambient sound and even more 24-hour total battery + fast charge: battery power consumption varies with use Product features: Bluetooth version: Bluetooth V5.0 Bluetooth protocol: A2DP, AVRCP, HFP, HSP Effective distance: 10M Working hours: About 6h (headset) + 18h (charging box) Rated input: dc5v50ma (earphone） dc5v350ma (charging box) Frequency response range: 20Hz-20KHz Sensitivity: 95dB Includes: 1x headphones