1.Left And Right Ear Rotary In Ear Bluetooth Headset.Comfortable ear hook for long endurance.2.Internal And External Training Powerful Hardware Configuration,HiFi sound quality, independent cavity, built-in high fidelity full screen speaker HiFi sound quality for your ears.3.13 Hour Long Endurance Music Goes On All Day.Built in high-capacity battery,high-end configuration,fast charging and long battery life, so that music can been joyed continuously Call/music approx 13h Stand by duration 120day.4.180° Free Rotation Easy Switching Between Left And Right Ears.Intelligently identify the charging state and automatically cut off the load.5.HD Phone One Touch Answer,Easier call answering and safer driving.Meticulous Feather Like Skin,The earphone surface is sprayed with rubber paint, which is as delicate as a feather Comfortable and meticulous sensory experience.6.Fitting Ear Hook For Painless Wear,The ear hanging design is adopted, and the streamlined body fits the auricle Make your ears more comfortable and give you a better wearing experience without swelling and pain for a long time.