JUHALL has been dedicated to produce Bluetooth headphones for MOST 10 years, and we have a professional team of experts in this area. We'll keep on to provide you attractive, stylish and Innovative products. JuhallDirect is the only authorized agent to sell JUAHLL brand prdoucts. Every JUHALL product includes a 60 days money back & 18-month warranty. What's the difference between Bone conduction headphones and normal headphones? Bone conduction is a way of conducting sound by sending the sound into a different frequency of mechanical vibration. Sent through the human skull, bone labyrinth, inner ear lymph fluid transmission, screw, auditory nerve and auditory center to transmit sound waves. In contrast to the classical sound transmission of sound waves through the diaphragm, the bone conduction eliminates many acoustic transmission steps to achieve a clear sound reduction in a noisy environment, and the sound waves won't affect others. When we eat a biscuit, we can hear the sound of biscuits broken because the vibration through our teeth and skulls to our inner ear. In the 18th century, the principle of bone conduction helped the great beloved deaf composer Beethoven to hear the wonderful music. Beethoven tried a technique invented by Giovanni Phillipo, England. Where he could hear the music from the jaw bones with a stick connected to the piano. This was actually the early beginning application of the bone conduction principle.Specifications: Bluetooth version:V4.2 Charging duration: 2hrs Music play duration: Up to 6hrs Standby duration: Up to 10days Bluetooth connection range: 30 ft Speaker type: Bone conduction Bluetooth protocol: AVRCP V1.6, A2DP V1.3, HFP V1.7, HSP V1.2 Speaker sensitivity: 100± 3db Microphone sensitivity: -40±3db Weight: 39g Whats in the box ? 1 X Bone conduction headphone 1 X USB Charging Cable 1 X tension band 1 X Manual
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