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KT-S66i/ KT-S33i User Manual
Dear Customer:
Thank you for purchasing our KEYKO Digital Product. Prior to use of this device, please read the
user manual carefully in order to operate it normally.
Turn on/Turn off
Turn on: push the switch to “ON”, blue indicator LED will shine, connect the audio cablewith
your player, and then you can enjoy music.
Turn off: push the switch to “OFF”, blue indicator LED will turn off. (if don’t use the device for
long time, please push the switch to “OFF” in order to save battery capacity).
Note: if you want to listen music, you should push switch to “ON”, otherwise you can’t listen it.
LINE IN Operation instruction
Insert the audio cable into the audio port on headset, and insert the other side to mobile device
which with audio output, such as MP3,Mp4,mobile phone, PC etc.
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Mute/Unmute
Hold the button which as below picture, it will be mute sound, release the button, the sound will
be resumed. The operation will avoid taking down headset from your head.
If the blue led light turns dark, it means the headset is with low power. Go on listening till the blue
led turn off and there is no sound, it means the battery is out of power. You should charge for
it.
Charge
The headset can be charged by USB cable enclosed when connected to computer. And
Charge from mini USB port located on headset with included USB cable or charge from adaptor.
When charging, red led will shine constantly, and it’ll turn off once fully charged.
It’s built-in chargeable battery, prior to use of the headset for the first time, please fully charge the
headset.
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Folding instruction
Headset maintenance
1.Please keep the headset dry and do not place headset near rain, humidity and other liquid.
These will corrode the headset. If the headset is wet, please do not use it until it’s dried
completely.
2.Do not clean the headset with strong chemicals, cleaner and detergent etc.
3.Do not use the headset in dusty and dirty place, it may damage the removable parts and
electronic components.
4.Do not place the headset in a high temp place, high temperature will shorten the device usage
life, damage battery or lead to some plastic distortion and melt.
5.Do not store the headset in low temp place, when earphone temp arise to normal temp, humidity
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will enter into the inner of the headset, it will lead to pcb board
damage.
6.Do not disassemble and modify the headset yourself.
7.if it’s not used for a long time, prior to use it, please charge the headset.
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