About this item SECURE FIT - Hook with soft material and lightweight design combine for a comfortable and stable fit LONG BATTERY LIFE - up to 30 hours with built-in battery and included charging case. Remote operation with volume control 3 SOUND MODES - you can select to listen to music with normal, bass or clear sound EASY OPERATION - Touch sensor control that does not burden the ears, and voice assistant compatible Open Sound - Included open type piece can hear srrounding sound