High-quality Stereo Sound: Our Bluetooth headphones with upgraded dynamic drivers and CSR chips, focus on bringing high fidelity sound and rich, powerful bass to your ears; Bluetooth 5.3 technology allows for quicker pairing and more stable connections, ensuring more stable calls and perfectly synchronized audio and video. Crisp Voice Calls: Built-in microphone with advanced CVC 6.0 noise cancellation technology effectively blocks out external noise, allowing you to take clear calls while driving or traveling. Button control on the right wireless earbuds is easy to adjust the volume, skip tracks, answer or end calls, etc. Long-Lasting Battery: Powerful rechargeable battery holds up to 16 hours of continuous wireless listening or 250 hours of standby time with just 2 hours of charging. Vrifoz bluetooth earbuds are enough to get you through any commute or workout. IPX7 Waterproof: With IPX7 waterproof rating, nano-coating technology efficiently prevents rainwater and sweat from penetrating and damaging wireless headphones' sensitive components, keeps going in all weathers and through all workouts. Get Fitted & Comfortable: The ergonomically designed ear fin keeps the lightweight earphones in place while 4 sizes of ear tips (XS, S, M, L) provide a customized fit and longtime comfortable wear. The cable clip ensures no wires get tangled.