HIFI HEAVY BASS:New wireless noise reduction technology, connection is simpler and faster, enjoy HIFI sound quality. SOUND QUALITY UPGRADE:Imported granphene vibration film, vigorous heavy bass, more delicate sound processing, clearer sound quality. COMFORT UPDRADE:Skin-friendly materia with ergonomic design, soft into ear, no swelling and pain when wearing, more stable and more comfortable. CHARGING UPGRADE:Upgrade version of charging cabin, providing long lasting battery life, you can use the charge box as power bank. TECHNOLOGY UPGRADE:Clod light digital display, the core technology is matched with piano paint materia, which make the earphones shows the beauty.