Nextar W3G - W3G LCD Color Touch Screen Portable GPS/MP3 Instruction Manual page 10

System Connections
Inserting SD Card
The unit is designed with SD/MMC Card jack which allows you to insert the SD/MMC
card into the unit as shown below:
Connecting to Headphones
Connect the headphones to the right side of the unit for private listening.
When headphone is connected, the speakers will automatically turn off.
Note: Excessively loud volume could damage your hearing. So turn down the volume
before you connect the headphones, and then raise the volume to comfortable level.
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