Supports adaptive ANC - mifo HiFiDots TWS earbuds continuously detect external sound and emit precise soundwaves to counter the noise. Up to 47dB of noise can be eliminated. A superior, intelligent algorithm senses changes in ambient noise and how you wear your earbuds, and automatically adjusts the degree of noise cancellation. Long press for one second to switch to mild noise reduction mode, strong noise reduction mode, or transparent mode. APTX-Lossless sound quality - HiFiDots Bluetooth 5.3 earphones equipped with multi drivers, Qualcomm 3071 chip, supports 44.1kHz, 16-bit CD-quality lossless audio Bit-rate up to 1.2 Mbps, provide listeners with among the very best in audio experiences.Fast charging function - FiiTii HiFiDots Earphones supports fast charging, the earphones can be fully charged in just 45 minutes and the charging case can be fully charged in just 1H. Charge for 10 minutes, the earbud can be used for 100 minutes. Multipoint connectivity - HiFiDots can be paired with two devices simultaneously and toggle them seamlessly. Control with APP - mifo HiFiDots wireless earbuds provide APP to control the sound effects, customized EQ, timed pause music play, flashing lights etc. Small Size&IPX7 Waterproof - HiFiDots IPX7 Waterpoof earbuds Weighing only 4.2g each bud, It feels like nothing in the ear and can be worn comfortably for extended periods without pain. The skin-friendly ear caps are sterile-processed, making them suitable for even sensitive skin.