📄 Original Source: boAt Official Support – Rockerz 400 Pro
boAt Rockerz 400 Pro
Wireless Headphones with HD Sound, ENx™ Tech & BEAST™ Mode
Sound Built for Life on the Go
Rockerz 400 Pro wireless headphones deliver top-notch sound quality and comfort, whether you’re at the gym, commuting, or relaxing at home:
- 40mm x 2 Drivers – HD Sound quality
- ENx™ Technology – Clear voice calls
- BEAST™ Mode – Low latency mode for gaming
- Up to 30 Hours Playtime – At approx. 60% volume
- Bluetooth 5.3 – Stable 10m connection
- Dedicated Microphone – Built for calls
Key Features at a Glance
🎵 HD Sound
40mm x 2 drivers for rich, detailed audio
⏱️ 30 Hours Playtime
At approximately 60% volume
🎮 BEAST™ Mode
Low latency mode for casual gaming
🎙️ ENx™ Tech
Environmental noise reduction for clearer calls
Full Specifications
| Specification | Details |
|---|---|
| Type | Bluetooth Wireless Headphones |
| Bluetooth Version | V5.3 |
| HD Sound | Yes |
| Driver Size | 40mm x 2 |
| Frequency Response | 20Hz – 20kHz |
| Music Playtime | Up to 30 Hours (at 60% volume approx.) |
| Charging Time | 1.5 Hours |
| Charging Port Type | USB Type-C |
| Transmission Range | 10m |
| BEAST™ Mode | Yes |
| ENx™ Tech | Yes |
Technology & Features
HD Sound
Dual 40mm drivers deliver rich, detailed HD audio across a 20Hz – 20kHz frequency range.
ENx™ Technology
Environmental noise cancellation technology that helps reduce background noise for clearer voice calls.
BEAST™ Mode (Low Latency)
A single press of the dedicated BEAST Mode quick-switch button activates low latency mode for casual gaming; press the same button again to switch back to normal music mode.
Multifunction Button (MFB) Controls
| Action | Function |
|---|---|
| Press & hold MFB (3 sec) | Power ON / Enter pairing mode (voice tone confirms) |
| Press & hold Power Button (5 sec) | Power OFF |
| Press & hold Power Button + Volume Down together (5 sec) | Factory Reset / Clear paired devices |
| Short press MFB once | Play/Pause, Answer call, End call |
| Double press MFB | Reject call (during ring) / Activate Voice Assistant |
| Press & hold Volume Up (2 sec) | Next Track |
| Press & hold Volume Down (2 sec) | Previous Track |
| Press & hold Volume +/- in steps | Adjust Volume |
| Single press BEAST Mode quick-switch button | Toggle BEAST™ Mode (low latency) on/off |
Pairing & Connectivity
Initial Pairing
- When switched off, press & hold the Power ON/OFF Button for 3 seconds to switch on and enter pairing mode
- The blue and red LEDs flash alternately to indicate pairing mode
- Open Bluetooth settings on your device and search for ‘Rockerz 400 Pro’
- Select the device from the list; enter passcode 0000 if prompted
- Once connected, a slowly flashing blue LED confirms the Bluetooth connection
Note: The headphones automatically turn off if no connection is established within 5 minutes of entering pairing mode.
LED Indicator Guide
- Pairing mode: Blue and red LEDs flash alternately
- Auto-pairing status: Red and blue LEDs flash three times simultaneously, then enter pairing state
- Connected: Blue LED flashes slowly
- Power off: Red LED flashes for 1 second before shutting off
- Charging: Solid red LED
- Fully charged: LED turns completely blue
Charging & Battery
How to Charge
- Plug one end of the USB Type-C cable into the headphone’s charging port and the other end into a computer or wall adapter
- Use only a 5V/2A wall adapter
- Full charge takes around 1.5 hours
- The red LED remains solid while charging and turns completely blue once fully charged
Troubleshooting Guide
Bluetooth Connectivity Issues
Headphones not connecting via Bluetooth
- Check the headphones are in pairing mode – hold the Multifunction button for 5 seconds until red and blue LEDs flash alternately
- Confirm the device is within 10m Bluetooth range with no obstructions
- Clear the pairing list by holding the Volume Up and Volume Down buttons together for 5 seconds in standby mode
- Check the connecting device supports Bluetooth connections
- If prompted for a passcode, try 0000 or 1234
- Check for software issues on your phone; try forgetting the device or updating mobile software
Charging Issues
Not charging or battery life is low
- Test the charging cable on another device, or try a different cable
- Use only a 5V/2A wall adapter
- Charge until the LED turns completely blue
- Check the battery hasn’t been tampered with or exposed to electrical damage
- Clean the charging port with a cotton swab if clogged with dirt
- Confirm the adapter and cable support fast charging
Sound Issues
Sound is distorted, low volume, low bass, or low quality
- Set the connected device’s equalizer to normal/default/zero/none
- Reset the device or clear the paired devices list
- Clean ear wax buildup on the earcups with a cotton swab and alcohol, then gently blow dry from a distance
- Ensure there’s no obstruction and you’re within the 10m Bluetooth range
Volume changes automatically
- Check equalizer settings on the connected device
- Test with different media players and devices to isolate the issue
Power & Control Issues
Headphones don’t power on
- Confirm the device has been properly charged first, until the LED turns blue
- Use only 5V/2A chargers
- Check for mishandling, broken wires, or exposure to direct sunlight or fire hazards
Built-in controls not working
- Test whether the controls work while connected to a different device
- Unpair/forget the device, reset, and pair again
- Verify the media player supports these controls
- Check for physical damage or exposure to sunlight/fire
Voice assistant doesn’t wake up
- Check that Google Assistant or Siri is enabled on your paired device
- Long press for 2 seconds and release; this may be restricted by default on some devices
Microphone Issues
Microphone not working
- Reset your Rockerz 400 Pro
- Ensure the microphone is not being blocked by any particles
- Check the microphone is being held at an adequate distance to pick up your voice
- Test by recording your voice on a voice recorder to confirm the mic is working
- Check the microphone hasn’t been exposed to hazards like direct sunlight, fire, or water beyond its resistance rating
Phone-Specific EQ Settings
| Phone Brand | EQ Path |
|---|---|
| Vivo | i Music > Audio effect > Deep space sound effects > Equalizer |
| Xiaomi | Settings > Sound & vibration > Sound effects > Graphic equalizer |
| Samsung | Settings > Sound quality and effects > Equalizer |
| Realme | Settings > Sound > Equalizer (varies by UI version) |
| Oppo | Settings > Sound & vibration > Equalizer |
| Apple | Settings > Music > EQ |
| Motorola | Settings > Sound > Audio effects |
| Poco | Settings > Sound & Vibration > Graphic Equalizer |
| OnePlus | Settings > Sound Quality & Effects > Audio Tuner |
Frequently Asked Questions
How long is the battery life?
Rockerz 400 Pro offers up to 30 hours of playtime at approximately 60% volume. A full charge takes around 1.5 hours.
Does it have Environmental Noise Cancelling?
Yes, Rockerz 400 Pro includes ENx™ technology for clearer voice calls.
How do I activate BEAST™ Mode?
Single press the dedicated BEAST Mode quick-switch button to activate low latency mode. Press the same button again to switch back to normal music mode.
Is it good for gaming?
Rockerz 400 Pro supports low latency via BEAST™ Mode, suitable for entertainment and casual gaming.
Does it have HD Sound?
Yes, Rockerz 400 Pro features dual 40mm drivers delivering HD sound quality.
Does it have a dedicated microphone?
Yes, Rockerz 400 Pro has a dedicated microphone built for calls and voice recording.
Need Help? Contact boAt Support
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Note: This guide is based on official boAt support documentation. For the most up-to-date information, visit boAt Support