Note : If the size of the earbud tips does not match the size of your ear canals or the headset is not worn properly in your ears, you may not obtain the correct sound qualities or call performance. Change the earbud tips to ones that fit more snugly in your ear.Specific uses for product : Personal | Bluetooth wireless headset delivers professional-quality audio and unbeatable convenience with a flexible design. Wear this premium headset everywhere and use built-in AI to aid and elevate your workday productivity | Get quality sound that lasts for hours—32-Bit hi-fi DAC upscale audio files to a higher resolution without compromising battery endurance.* Meridian Audio provides an enhanced listening experience in almost any environment | Multi-layer construction produces greater clarity in both high and low ranges for accurate treble, and rich, deep bass for balanced sound. Dual microphones pick up your voice for hands-free conversations, even in noisy environments | Large built-in battery gives you up to 10 hours of playtime on a single charge and charges quickly—get up to three hours of use from a short 10-minute charge | Neckband design reduces fatigue associated with wearing conventional headsets for many hours, ensuring that you won't miss important calls while working from home or on the go. It's also flexible for neatly storing in a bag or pocket