【Bluetooth 5.0 Faster and More Stable Connection】 With the latest Bluetooth 5.0 + CSR 8645 chip. Latest Bluetooth 5.0 chip provides fast, stable and low-power connection. faster pairing, more stable wireless connection and wider compatibility with Bluetooth enabled cell phones, tablets, computers, TV,smart watches and smart speakers.

【Retractable Earbuds and Outstanding Battery Performance】The Auto retractable earbuds allows you to pull the retractable earbud wire to the length you want and press the retract button can store the earbuds wire automatically. Its powerful rechargeable 500mAh battery ,provides up to 36 hours of continuous music or phone conversation with.up to 480 hours standby time.

【Foldable and Ergonomic Neckband】Made of environmental ABS material.Foldable design enables you to take it anywhere in your pocket or in your bag. Around-the-Neck wearing design Ergonomic neckband design allow you to wear the headphones on your neck more comfortably and decrease the pressure of your ears.

【High-fidelity Stereo Sound Quality】With bass up technology and 10mm dynamic speaker system, provide more powerful bass and crisp treble. Perfect for different music styles and melodies.Tuned by professional audio engineers, you can experience high quality sound.

【Stereo Sound Quality& CVC 6.0 Noise-Cancelling Mic】Call Vibration. The built-in CVC6.0 noise-cancelling microphone can reduce background noises so as to provide crystal-clear sound for hands-free calls. With bass up technology and 10mm dynamic speaker system, provide more powerful bass and crisp treble. Perfect for different music styles and melodies.