Monster FLEX ANC User manual
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THANK YOU FOR
CHOOSING MONSTER
Congratulations on your Monster FLEX Headphones.
Please take your time to explore all the features and
Utilities we have built into this product.
We put all of our products through rigorous testing and
Quality control. For your peace of mind, we offer a one-year
Limited warranty against manufacturing defects and
Workmanship. Please refer to the warranty section of
The user manual for more details.
For more information all of our products,
please visit: MyMonsterAudio.com
Monster FLEX ANC
Micro USB Cable
AUX Cable
PRODUCT CONTROL 4
KEY BEHAVIOR 5
CHARGING 6
ANC ON/OFF 6
RESET MODE 6
AUTO POWER OFF 6
VOLUME CONTROL 7
AUDIO TONE 7
BATTERY REQUIREMENT 8
OTHER 9
FCC WARNING STATEMENT 9
NOTES 10
SPECIFICATIONS 12
WARRANTY 13
3
21
4
5
6
KEY BEHAVIOR
1. Turn ON Power: press and hold for 2 seconds
2. Turn OFF Power: press and hold for 3 seconds
3. Vol+: Short Press
4. Vol-: Short Press
5. Previous: Press and hold 2 seconds
6. Next: Press and hold 2 secondvs
7. Play/Pause: Short press
8. Accept calls: Short press
9. End a call: Short press
10.Reject an incoming call: Press and hold for 2 seconds
11.Launch Voice Assistant: Double-Click
RED/BLUE/GREEN LED
MIC
ANC ON / ANC OFF
VOL +
POWER/MULTI FUNCTION
VOL -
KEY BEHAVIOR continued
12. Turn Off ANC in Power off mode: Short press
ANC button
13. Turn On ANC in Power off mode: Press and hold
ANC button for 2 seconds
14. Turn Off ANC in Power on mode: Short press ANC button
15. Turn On ANC in Power on mode: Short press ANC button
16. Reconnect when disconnected: Double click
17. Voice transfer in calling: Press and hold for 2 seconds
18. Mute in calling: Press and hold for 2 seconds
19. Enter pairing mode: Press and hold and
together for 3 seconds
20. Three-Party Conference: During the call, double
click the button to receive the seconds incoming
call, the first coming call will enter the call hold,
double click the button to switch between two
calls freely; During the call, click the button to
answer call and hang up the current call.
Bluetooth is always in pairing state
after being turned on the first time
CHARGING
New headphones will have enough power for pairing and
dialing out but need to be fully charged to use for a
prolong time. The RED LED will flash quickly when in low
battery, Red LED will blink while charging, Red LED will turn
solid after fully charged; 2-3 hours are needed for a
fully charged battery.
RESET MODE FOR HARDWARE RESET
Connect the headphones to the computer via Micro
USB cable. When red LED light flashes, headphones reset is
finished.
AUTO POWER OFF TO SAVE BATTERY IN BATTERY MODE
1. If the FLEX is on and has no action within 15
minutes, the FLEX unit will auto power off to save battery.
2. If the FLEX is on and Bluetooth has disconnected over 15
minutes; the FLEX will auto power off to save battery.
3. The FLEX will power off to charge when power cable is
connected.
Remarks: The FLEX can auto power off if Bluetooth is connected and battery is too low
VOLUME CONTROL
1. Volume range: 0-16
2. Volume will remain the same after the FLEX is powered
Off/On.
3. Short press “VOLUME –“ key once to decrease volume,
the “chime” tone will sound off once after pressing
“Volume –“ key again when volume reaches minimum level.
4. Short press “VOLUME +” key once to increase volume,
the “chime” tone will sound off after press “Volume +“
key again when volume arrive maximum position
5. The FLEX will return to 50% volume if volume is 0 and
unit is powered off/power on again.
AUDIO TONE
“Connected” tone will sound off when main unit has
paired successfully.
BLUETOOTH PAIRING DISTANCE
BT distance > 10m
BATTERY REQUIREMENT
1. It takes 1-2 hours to fully charge the FLEX.
2. Battery playback time is over 8 hours with ANC Off mode.
3. Battery playback time is over 7 hours with ANC On mode.
OTHER
1. Incoming call status:
If a call comes in when the phone is playing music
through Bluetooth, the music will be stopped and
the phone will be playing the ring tone;
When the call is ended, the FLEX will resume the
music playing
2. The operation of Conference call by three parties:
Short press the multifunction button, pick up the new
incoming call and end the current call; When
headphones are in use and a new call is in
coming, double press the button to pick up the new
call, and previous call will stay connected and vice versa.
To Pairing, When headphones are connecting, press
and hold the key and together for 3 seconds to
enter pairing mode and the 'Pairing' audio tone sound off.
Connection loss due to transmission distance out of range
The Flex will “chime” when it is out of range and when
there is a link loss with the Bluetooth device that it is
connected to. The Flex will attempt to connect for
5 minutes during link loss, every thirty seconds the
“chime” sound will ring, and every 10s it will attempt
to search.
To reconnect
When headphones are disconnecting and are within
transmission range, Double press button 2 times to
reconnect last smart phone.
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