Size Name:Gloss White Frame  |  Colour Name:Transparent What is bone conduction? We hear bone conduction sound while eating, drinking and scratching our head, etc. We also hear ourselves talking partially through bone conduction. That's why we perceive our own voice differently from what other people hear. Taking advantage of this natural phenomenon, bone conduction transducers guide micro-vibration through the cheekbones to the inner ears, delivering sound without plugging or covering them. How to distinguish true and false bone conduction? Block your ear, if the sound is louder when the ear is blocked, it is a bone conduction. Otherwise it is a speaker! (The principle is that the bone conduction propagation mode is a way to block the air transmission.) Note: 1. There may be an external sound,please pay attention to the protection of personal privacy. From a professional point of view, it is not a leak, it is the second sound, So we developed the fourth generation of technology, our new technology reduced the sound leakage of 87%. 2. Please do not use the glasses when swimming. Please do not try to disassemble or modify the entire product. Configuration: Lenses Material: Acrylic Frame Material: ABS+PC+silica gel Speaker type: bone conduction speakers Attribute: Polarized Microphone:-40dB ± 3dB Compatible profiles: A2DP, AVRCP, HSP, HFP Transmission distance:33 ft(10m) Battery:rechargeable lithium-ion, 250mAh Continuous play:3-4 hours(normal volume) Standby time:10 days Charge time:2 hours Weight:32g Waterproofing grade: IP67 Bluetooth version: CSR4.1, dual Bluetooth pairing Working temperature:-10℃-+50℃ Humidity 0-90% Package: 1x Bone conduction glass 1x USB cable for charging1x English User Manual 1x Anti skid raised nose pad
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