4 Mics Noise Cancellation Each earbud has 2 MEMS microphones, one reduces the background noise, the other picks up & enhances your voice. Combined with the DSP (Digital Signal Processing) technology, greatly reduce environmental noise by 90%. To enjoy crystal clear phone calls even in noisy background, bringing the effect of face-to-face talking. Comfort Wearing The ergonomic Bluetooth earbuds provide snug & secure fit & greatly disperse pressure & ensure comfort for all-day wearing in lightweight design. IPX5 waterproof to prevent sweat & water splash, the best choice for jogging, yoga, cycling, commuting, zoom meeting, Face Time, travel, etc. Stable Connection, Easy Control Equipped with the smart Hall Switch, seamlessly connect T2 earbuds with paired Bluetooth devices once open the case. One-step setting to pair the earbuds like a breeze, stable wireless connection over Bluetooth 5.0. Easily touch to achieve EQ setting, volume control, music playback, making calls, voice assistant, etc. IPX5 Waterproof Support IPX5 waterproof to prevent sweat & water splash, no need to worry when you wear it while running, skiing, cycling, etc. Fast Wireless Charging Enjoy fast charging, to fully charge the rechargeable case only 1.5 hours via fast charge USB (Universal Serial Bus)-C cable or less than 2 hours via a wireless charger. (Note: Wireless charger sold separately) Key Features Bluetooth Version: Bluetooth 5.0 Frenquency Response: 20 Hz-20 K Hz Speaker Sensitivity: 102±3d B Microphone: 4 MEMS Microphone Noise Cancellation: ENC Noise Cancelling Waterproof: IPX 5 Charging: USB (Universal Serial Bus)-C / Wireless Charging