Long Life Battery Earphones Professional design provides powerful bass enhanced sound with superb musical details. Excellent dynamic unit enhances the high-definition sound. Long Battery Life and Fast Charging ：20 minutes charging time, 120H stadnby time. Comfortable Ergonomic design : Extremely lightweight and compact. Ergonomic design allows you to wear for a long time without feeling pain. Simple Pairing : pairing of these bluetooth headphones is also easy. You can also connect single earbud.