Introduction
Thank you for choosing the GOBOULT Flex On-Ear Bluetooth Headphones. This manual provides essential information for setting up, operating, and maintaining your headphones to ensure optimal performance and longevity. Please read this manual thoroughly before using the product.
What's in the Box
- GOBOULT Flex On-Ear Bluetooth Headphones
- Type-C Fast Charging Cable
- User Manual
- Warranty Card
Product Overview
The GOBOULT Flex headphones are designed for comfort and high-quality audio. They feature 40mm bass-boosted drivers, Bluetooth 5.4 connectivity, and an adjustable, foldable design.

Image: Overview of GOBOULT Flex features including 40mm drivers, Bluetooth 5.4, 4 EQ modes, 60ms low latency, 80-hour battery, and ENC calling.
Key Components:
- Earcups: Soft, cushioned earcups for comfort.
- Adjustable Headband: Allows for a customized fit.
- Control Buttons: Located on the earcups for power, volume, playback, and call management.
- Type-C Charging Port: For charging the headphones.
- AUX Input: For wired audio connection.
- Microphone: Integrated Zen™ ENC mic for clear calls.
Image: The adjustable headband and earcups of the GOBOULT Flex headphones, designed for a comfortable fit.
Setup
1. Charging the Headphones
Before first use, fully charge your GOBOULT Flex headphones. Use the provided Type-C charging cable.
- Connect the Type-C cable to the charging port on the headphones.
- Connect the other end of the cable to a USB power source (e.g., wall adapter, computer USB port).
- The LED indicator will show charging status (refer to product for specific light patterns).
- A full charge takes approximately 60 minutes and provides up to 80 hours of playtime.
- Fast charging provides 5 hours of playtime with just 10 minutes of charging.
Image: Visual representation of the 80-hour battery life and fast charging capability (10 minutes charge for 5 hours playback).
2. Bluetooth Pairing
Pair your headphones with your device for wireless audio.
- Ensure the headphones are charged and powered off.
- Press and hold the Power button until the LED indicator flashes (usually blue and red alternately), indicating pairing mode.
- On your device (smartphone, tablet, laptop), enable Bluetooth and search for available devices.
- Select "GOBOULT Flex" from the list of devices.
- Once connected, the LED indicator will typically show a solid blue light or flash slowly.
- The headphones feature Bluetooth 5.4 and Blink & Pair™ technology for fast and stable connections.
Image: The headphones connected via Bluetooth 5.4, highlighting the Blink & Pair feature for quick device connection.
Operating Instructions
Power On/Off
- Power On: Press and hold the Power button for approximately 3 seconds.
- Power Off: Press and hold the Power button for approximately 5 seconds.
Music Control
- Play/Pause: Press the Multi-function button once.
- Next Track: Press and hold the Volume Up button.
- Previous Track: Press and hold the Volume Down button.
- Volume Up: Short press the Volume Up button.
- Volume Down: Short press the Volume Down button.
Call Control
The Zen™ ENC mic ensures clear communication by reducing environmental noise.
Image: Detailed view of the Zen™ ENC microphone technology for effective environmental noise cancellation during calls.
- Answer/End Call: Press the Multi-function button once.
- Reject Call: Press and hold the Multi-function button for 2 seconds.
- Redial Last Number: Double-press the Multi-function button.
Voice Assistant
Activate your device's voice assistant (e.g., Google Assistant) directly from the headphones.
- Activate Voice Assistant: Triple-press the Multi-function button.
Image: The headphones featuring voice assistant compatibility and IPX5 water resistance for protection against sweat and splashes.
Gaming Mode (60ms Low Latency)
Engage Combat™ Gaming Mode for ultra-low latency audio, ideal for gaming.
- Activate Gaming Mode: Refer to the specific button combination in your quick start guide (often a dedicated button or a long press of a volume button).
- This mode reduces audio latency to 60ms for a synchronized gaming experience.
Image: The headphones highlighting the Combat™ Gaming Mode with 60ms ultra-low latency for an enhanced gaming experience.
Wired Mode
Use the included AUX cable for a wired connection when wireless is not preferred or the battery is low. Note that the microphone is typically off in wired mode.
- Connect one end of the 3.5mm AUX cable to the headphone's AUX port.
- Connect the other end to your audio source's 3.5mm jack.
Image: Comparison of wired mode (with mic off) and wireless mode, demonstrating the flexibility of connection options.
EQ Modes
The headphones offer 4 Equalizer (EQ) modes to customize your audio experience.
- Available Modes: Bass, Rock, Pop, Vocal.
- Switching Modes: Refer to the specific button combination in your quick start guide (often a dedicated EQ button or a combination press).
Image: The headphones emphasizing powerful bass delivered by 40mm boosted drivers with Boomx™ technology, and support for AAC/SBC codecs.
Image: Internal view of the headphones showing the DSP processor, indicating features like seamless VoIP calls, adaptive audio equalization, and 16-bit dual-audio processing.
Maintenance
Proper maintenance ensures the longevity of your headphones.
- Cleaning: Wipe the headphones with a soft, dry cloth. Do not use harsh chemicals or abrasive materials.
- Storage: Store the headphones in a cool, dry place away from direct sunlight and extreme temperatures. The foldable design allows for compact storage.
- Water Resistance: The headphones are IPX5 rated, meaning they are resistant to sweat and light splashes. Do not submerge them in water or expose them to heavy rain.
Troubleshooting
No Power
- Ensure the headphones are fully charged.
- Check the charging cable and power source.
Cannot Pair via Bluetooth
- Ensure the headphones are in pairing mode (LED flashing blue/red).
- Make sure Bluetooth is enabled on your device and it is within 10 meters of the headphones.
- Forget "GOBOULT Flex" from your device's Bluetooth list and try pairing again.
- Restart both the headphones and your device.
No Sound
- Check the volume levels on both the headphones and your connected device.
- Ensure the headphones are properly paired and connected.
- If using wired mode, ensure the AUX cable is fully inserted into both the headphones and the audio source.
Poor Call Quality
- Ensure the microphone is not obstructed.
- Move to a quieter environment to allow the ENC mic to function optimally.
- Check your device's call settings.
Specifications
| Feature | Specification |
|---|---|
| Model Name | Flex |
| Brand | GOBOULT |
| Connectivity Technology | Bluetooth, Wireless |
| Bluetooth Version | 5.4 (Product Title says 5.4, Specs say 5.3, using 5.4 as per title) |
| Bluetooth Range | 10 Metres |
| Audio Driver Size | 40 Millimetres |
| Audio Driver Type | Dynamic Driver |
| Battery Life | 80 Hours (Playtime) |
| Charging Time | 60 Minutes |
| Fast Charging | 10 minutes for 5 hours playtime |
| Headphones Jack | Type-C Fast Charging Jack, 3.5mm AUX |
| Microphone | Zen™ ENC Mic |
| Low Latency Mode | 60ms (Combat™ Gaming Mode) |
| Water Resistance Level | IPX5 (Sweatproof, Water-resistant, Splashproof) |
| Noise Control | Passive Noise Cancellation |
| Item Weight | 214 Grams |
| Product Dimensions | 5 x 19 x 20 cm |
| Included Components | Cable, Headphone, Type-C Fast Charging Cable, User Manual, Warranty Card |
Warranty and Support
The GOBOULT Flex On-Ear Bluetooth Headphones come with a 1 Year Warranty.
For warranty registration, technical support, or customer service inquiries, please visit the official GOBOULT website or contact their customer support team using the information provided on the warranty card.





