● Wireless Bone Conduction Sounder use advanced air conduction technology, sound waves are conducted to the inner ears directionally, effectively prevent the eardrum from being damaged by loud music. Open-ear design headphones can keep you connecting and aware of your surroundings while listening music, avoid danger.
●【LIGHTWEIGHT & SWEATPROOF】:Bluetooth Air conduction sounder is only 1.05 oz, super light and flexible. Ergonomic design comfortable to wear, you will not feel any pain even after prolonged wearing. This wireless sounder small and exquisite appearance, it's easy to carry and store. IPX5 water resistance can against sweat and light rain.