Prefeco® Wicool Bluez Open Ear Bone Conduction Wireless Bluetooth Headset Earphone - Retail Packaing (Red)

Description

What is bone conduction technology? The following is the definition for bone conduction and Conventional air conduction  : bone conduction: the process by which sound waves are transmitted to the inner ear by the cranial bones without traveling through the air in the ear canal   air conduction  : conduction of sound waves to the inner ear through the external auditory canal and middle ear.   So the WICOOL Bluetooth headphones utilize bone conduction technology to deliver sound through the listener's cheekbones to the inner ear. Loudspeaker：Bone conduction loudspeaker Microphone : -39dB±3dB Frequency range ：20Hz-20000Hz Battery : Polymer Lithium-Ion Battery Talking time：3~4 hours Music playing time：2~3 hours Charging time：0.5 hours Working range：10 meters Weight ：25g Guarantee: 12 months