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③ When you turn off the headphone, you can use it as a normal stereo wired headphone. Noise Cancelling Headphone 4. Parameter Users` manual HP- 080 ① Working Volt: DC 3V（2xAAA batteries） ② Working Current:<55mA (0.7 sine wave loading volt) ③ Noise Reduction: >16dB at F=300Hz HP-080 Noise Cancelling Headphone adopt special electrical circuit to reduce the surrounding noise, which can improve hearing effect. Even if in noisy ④ Sensitivity: 114dB ±2 dB at F=1KHz ⑤ Frequency Response:20Hz~20KHz environment you may enjoy high quality stereo music. 1.Features 5.Working condition ① Working temperature: -10℃~60℃, working humidity:20%~90% ① This item is suitable for any audio devices. ② When use this item, try to avoid overloading signal input, operate it in the ② Own stereo headphone and stereo noise cancelling headphone function. range of the power input extension. (Switch on the noise cancelling function when you are in noisy envoirnment) 2.Parts Introduction 6.Problem and Solution Problem Causes Noise cancelling Doesn't mount battery or reverse function doesn't the polarities, battery run out work of ,or the power is lower Solutions Replace the old battery with new one ,meanwhile mount the battery according to the engraved polarities . 3.User's Manual ① Mount 2 x AAA batteries in the battery case. ② Turn on the power switch, the power indicator will be on. Connect the audio Caution: When not use them, please turn off the headphone. And pop the batteries device with the headphone, adjust the volume properly, you will sense that noise if you won't use them for a long time. Try to avoid touching this item with sharp outside is decreased a lot. object in order not to influence the appearance.
