I. Introduction
Thank you for purchasing the Xtech XTH-M660IM/XTH-M660CA Marvel
wireless headphones with wireless technology. By pairing it with mobile audio
devices enabled with Bluetooth
, the headphones offer great audio quality,
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excellent performance, and the freedom of listening to music or taking calls
easily everywhere you go.
We encourage you to thoroughly read this user guide to get the most out of
this portable wireless audio device.
II. Main features
• Stereo headphones with microphone and wireless technology
• Wirelessly stream audio from a smartphone, tablet, or computer
• Built-in rechargeable battery provides up to 8 hours of continuous playtime
• Built-in microphone for talking with friends and family
• Adjustable headband and padded ear cushion for maximum comfort
• Aux-in jack function to connect the headphones to a device and keep the
music on
• 40mm drivers deliver detailed and natural sound from various audio sources
• On-board controls for power, music, and phone call management
• Earcups fold flat 90 degrees for easy portability
• Foldable design for practical transport
Package contents
• Wireless headphones
• Micro USB charging cable
• User guide
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III. Product overview
1. Next track/volume +: To increase the volume level press and hold this
button. Press this button to play the next track.
2. Previous track/volume -: To lower the volume level press and hold this
button. Press this button to play the previous track.
3. Phone: Press this button to answer an incoming call or end it.
4. Power/play/pause: Press and hold this button for 3 seconds to power on
or off the headphones. Press this button once to play or pause audio.
5. LED indicator
6. 3.5mm auxiliary input port
7. Microphone
8. Micro USB charging port
IV. Basic operation
• Plug one end of the supplied Micro USB cable to your headphones Micro
USB port and the other end into the USB port of your computer or to a 5V
USB adapter to fully charge the battery.
• Make sure that the headphones are fully charged before using them for the
first time.
• The headphones battery needs to be charged for at least 1.5 hour.
• While the headphones are being charged, the LED indicator glows red.
• When the battery has reached full capacity, the LED indicator turns off.
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