Deep Bass Sound: Kurdene true wireless earbuds have oversized 12mm drivers ,Get the most from your mixes with high-quality audio from secure that deliver powerful sound with boosted bass so you can lose yourself in your favorite songs | Light-Weight ,Comfortable fit: The Ear Buds Making it as light as a feather and discreet in the ear. Ergonomic design provides a comfortable and secure fit that doesn’t protrude from your ears especially for sports, workout, gym | Playback Duration: When listening at maximum volume, the headphones have a usage time of 4 hours. At medium to low volume with deep bass, the usage time extends to 6 hours. Single-ear calls last for 3 hours, while using both headphones together allows for 6 hours of talk time | Superior Call Quality: The Clear Call noise cancelling earbuds enhanced by 4 mics and an AI algorithm allow you to enjoy clear communication. lets you balance how much of your own voice you hear while talking with others | Bluetooth 5.3 with Fast Pairing: The earbuds wireless bluetooth sophisticated 5.3 technology enables a quick, dependable, and steady transmission. With a range of up to 10 m, Automatic pairing & compatible with ios,android, iphone, Samsung Pixel Phone,Tap,laptop, ipad multiple devices