Adjustable headphone

+Features

1.Electronic ear defenders protect the ears against noise levels higher than 85dB..

2.Solid state circuitry allows normal speech and sounds to be heard but automatically deadens any noise above 85dB.

3.On/Off switch with adjustable volume control.

4.Auto-adjust head band.

5.Uses 2xAA batteries (not included)

viding approx. 200 hours of use.

7.Color : yellow(transparent) , black(transparent) , red.

8.inner package : colorful box or double blister

+Instruction For Use:

When worn properly and given adequate care, this sound muffler provides excellent protection

by filtering out high frequency noise caused by machinery, motors, saws, and gunfire.

1.Extent headband to maximum “ open” position

and place the cups over the ears with the

headband passing over the head.

2. Settle the headband in position on the head

while adjusting the height of the ear cups up or

down until they feel comfortable and the

headband rests on the top of the head to

support the muffs.

3.Make sure that the headband is evenly

adjusted,left to right. The ear cushion should

be a snug fit against the head.

4.Make sure to get as little hair as possible

between he ear cushions and your head.

Muffs should be cleaned regularly with soap and

water

+Example:

1.The environmental noise level as measured at the

ear is 85 dBA.

2.The NRR is 28 decibels (dB)

3.The level of noise entering the ear is

approximately equal to 64.5dBA