Q: How to connect a mobile for wireless music ?
A: When the speaker is in wireless mode, search for nearby BT devices in your mobile. Tap the name "ZEB-TOUGH" and connect it. (Password - 0000, if prompted)
Q: What are the different modes in ZEB-TOUGH ?
A: BT Wireless/Micro SD/USB/FM /AUX mode.
Q: How to tune FM channels?
A: Switch the speaker to FM mode.
   Connect the micro USB cable to the micro USB port of the speaker and leave the other end free (this cable will act as the FM  antenna).
   Press and hold the Play/Pause button to start scanning the FM channels.
   Once the scanning is done, the speaker will start playing from the first saved channel.
   To change the channels you can use +/- buttons. 
Q: What are the different LED indicators?
A: Red LED glowing - Charging  
    Red LED turns off: Full charge indication
    Green LED blinks - Discover Mode.
    Green LED Glows - Speaker is connected to a device
Q: What is the operating range of the ZEB-TOUGH in wireless mode?
A: 8-10 meters.
Q: How to decrease/increase the volume level?
A: 8-10 meters (without any obstacles).
Q: What is the maximum capacity of USB / mSD card that TRX15L can support?
A: Press and hold "-/+" to decrease/increase the volume level respectively.
Q: What is the maximum capacity of USB/mSD card that ZEB-TOUGH can support?
A: 32GB.
Q: Does the speaker has call function?
A: Yes.
Q: What is the charging voltage?
A: DC 5V with micro USB cable.
Q: How to use a USB/mSD card?
A: Once a USB/mSD card is inserted into the speaker's USB/mSD card slot, it will detect the USB/mSD card automatically and start playing the songs from it.
Q: How to use TWS function?
A: TWS function requires 2 nos. of ZEB-TOUGH speakers.
  After entering wireless BT mode on both the speakers, press and hold the 'Play/Pause' button on any one of the speakers and you would hear a tone indicating that the TWS mode is activated. Open the mobile's BT menu and scan for ZEB-TOUGH to pair with it.