User safety guide – Jwin JB-TH210 User Manual
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Micro-size Bluetooth headset V10M10_IM_EN_12032007
www.jWIN.com
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USER SAFETY GUIDE
IMPORTANT NOTES ON HEARING
Your hearing is very important to you and to us. We strongly 
recommend you to follow the guideline below in order to prevent 
possible damage to or loss of hearing. 
 
Hearing experts caution that listening to loud sounds can 
damage hearing over time. With continuous listening to loud 
sounds, hearing adapts and will give the impression that volume 
has reduced. What seems normal may, in fact, be harmful. To 
guard against this before hearing adapts, set the volume at a low 
level and slowly increase the volume level until sound can be 
heard comfortably and clearly without distortion. Damage to 
hearing is accumulative and is irreversible. Ringing or discomfort 
in the ears indicates that the volume is too loud. Once a 
comfortable listening level has been established, do not increase 
the volume level further. 
 
CAUTION! 
If you experience a ringing sound in your ear, lower the volume 
or discontinue the use of this product.