The Bluetooth ear-buds have 13mm drivers and volume-optimized active Eq for clear and balanced sound at any volume. The diaphragm design reproduces a rich bass, and also enhances sound quality and reduces distortion. Mics work together to reduce noises around you, keeping your voice sounding clear for fewer distractions during phone calls. Anc technology is used to effectively reduces external noise through multiple microphones giving you a quieter listening environment. .Furthermore, the ear-buds offer a Transparent Mode, allowing you to hear and interact with the sounds and announcements around you. The Wireless ear-buds feature an Led full-color smart touch screen on the case. It can display more than ten personalized functions. Music control, volume adjustment, noise reduction mode, sound equalizer, time alarm, language change, brightness adjustment, lock screen wallpaper, search headphones, emergency lighting and many other functions that can be turned on with just one click.