Connection Type...Wireless Features...Bluetooth, Bone Conduction Industry's Newest Bone Conduction Earphones Bluetooth with Microphone, Bone Conduction Earphones Bluetooth Waterproof Sports Earphones Running Training Cycling Ear-Opening Earphones Bone Conduction Wireless Earphones Bluetooth Earphones Type-C Fast Charging 8 Hours Continuous Use Bone Conduction Headphones Ear-Hook Type Bone Conduction Headset Calls Remote Conference Telework Work from Home Possible Japanese Instruction Manual Gift Black Regular Price: 15999 yen Erssimo Bone Conduction Earphones Bluetooth Ear-Opening Earphone Design Erssimo bone conduction doesn't block the ears, allowing you to hear surrounding sounds and enjoy music while conversing. Comfortable for long periods of wear. Bone Conduction VS Regular Earphones "Bone conduction," as the name suggests, transmits vibrations directly to the inner ear through the "bone," delivering sound to the brain. It protects the ears without damaging the eardrum. Since it doesn't block the ears, you can hear ambient sounds even while playing music, preventing hearing loss. Regular earphones transmit sound vibrations from the ear to the eardrum, which the brain then recognizes as sound. Wearing them for extended periods can cause earaches or headaches. *This product is new and unused, but may have been opened. Please understand before purchasing. Main Specifications Communication Method: Bluetooth V5.0 Supported Codec: AAC Weight: 29g (Type: Neckband) Color: Black Charging Port: USB Type-C Charging Time: 1-2 hours Waterproof Performance: IPX55 Microphone: Yes