ogg k6 wireless earbuds bluetooth earphones, active noise cancelling headset, wireless bluetooth earbuds with mart touch,8 hours playback and 55 extra hours of charging case (white) ogg <br><b>what is active noise reduction technology?</b><br>active noise reduction is to generate an inverted sound wave equal to the external noise through the noise reduction system, and neutralize the sound, thereby achieving the effect of noise reduction. active noise reduction is to reduce and eliminate some low-frequency environmental noises, such as traffic noise, environmental noise and background noise.<br><br><b>q: why does the noise reduction effect of ogg wireless bluetooth headphone is better than normal wireless bluetooth headset? </b><br>a: ogg wireless bluetooth headset used the latest active noise reduction technology, which can be better to reduce noise or less noise, then makes music or human voice clearer.<br><br><b>q: why does k6 wireless bluetooth headset's quality sound better?</b><br>a: we used 10mm dual magnetically driven bio-diaphragm ,it makes sound vibrating, relaxing and plump, then make every details in music more smoothly.<br><br><b>q: why does use ogg wireless earbuds make calls more clearly?</b><br>a: our voice micphone used environment noise cancellation technology. it's better to prevent surrounding noise transmit to other side.<br><br><b>q: why does the ogg wireless bluetooth headphones has longer service life?</b><br>a: we used the latest bluetooth 5.1 chip, which tdp is lower than version 5.0, and we have expanded capacity of charging compartment to 400 ma.<br><br><b>q: is the signal of the k6 wireless bluetooth earbuds stable? </b><br>a: we used the latest version of 5.1 bluetooth connection technology, which make a stable and effective connection under 10m accessible working range without delay, and it will be given you a comfortable call experience.<br><br>any questions please contact us by e-mail. we would provide 7x24 hours services for you.<br><br><b>packing list: </b><br>earplugs* 1<br>charging box * 1 <br>usb c charging cable* 1<br>earplug cap* 2 <br>user manual* 1(please read the instructions before use)<br>