Specification:Material: PlasticMax sound output: ≤118dBSound gain: 42±5dBFrequency range: 100 - 4000HzWorking voltage: 1.4VCharging time: 4-6 hoursWorking time: 10-15 hoursNote:Adjust volume to the minimum before wearing.Choose an earplug of slightly bigger size to avoid whistler.Increase volume gradually to avoid sudden increase in sound.Keep the ear plug cleanRemove the battery if you don't use it for long time.What is it in box?1 x Audiphone4 x Earplug1 x Charger1 x Charging Head1 x Hair Brush1 x Tuning Stick1 x Plastic BoxAbout Our services:❤ 1. If you are satisfied with our products, please do not forget to leave positive feedback of 5 stars.❤ 2. If you are not satisfied, please contact us, let us know, before we leave negative/neutral feedback, we will solve this problem before being satisfied.
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