ENC ENABLED : The TWS earbuds have auto Environmental Noise cancellation feature that cuts out background noises for clear voices during phone calls. EFFORTLESS CONNECTIVITY : The wireless earphones have bluetooth version 5.3 which allows the earbuds to connect to iOS/Android smartphones and tablets at superfast speed. BALANCED BASS : The TWS earbuds have 10 mm dynamic drivers that give the most complete audio experience with balanced bass and treble. IPX4 : The earphones are rated IPX4 are resistant to water, splashes and sweat. COMFY-FIT BUDS : The soft silicone on the in earbuds make a comfortable fit that is crafted for all-day wear.