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no led light when in use.support the previous track/next track/callfully compatible with ios and android system play time: 4 hoursfunction 1: power displayfunction 2: call functionfeature 3: voice controlfunction 4: support musicfunction 5: multi-point connection.

ultra slim and portable ultra slim design for lap small enough to be functional without taking up tons of space, a good helper for business trips and office..syi.

syi.mksd,long wrapped design especially suitable.

the quality is very good, please rest assured to buy. high-quality bags, please rest assured to buy we wholesale all kinds of shoes, bags, clothes, belts, glasses, etc.

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.Écouteurs à Conduction osseuse Bluetooth 5.0, sans fil, non intra-auriculaires, étanches IPX5, pour Sport, légers bone conduction headphones convert sound into mechanical vibrations of different frequencies, and transmit sound to the auditory nerve through the cheekbone instead of air, open ear design can avoid some dangerous situations from happening as you can also hear the surrounding sound when you use it to listen to music titanium neckband is lightweight and flexible to ensure maximum comfort during extended wear open ear design helps you achieve the true painless and harmless as the earphone is no need to plug into the ear canal.

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. bluetooth 5.you will feel comfortable to wear the earphone with ergonomic design.

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syi the large-capacity battery can provide 72 hours of music time, and can talk for 15 hours when fully charged, suitable for all-day outdoor activities, compatible with most bluetooth-compatible-enabled mobile phones, lap, desk and other devices.1 chip brings high speed and stable transmission, which has strong ability of anti-interference.. bluetooth 5.