1. Getting Started
1.1 What's in the Box
Please check the package contents to ensure all items are present:
- DOOGEE Field Rush Wireless Speaker
- User Guide
- Warranty Card
- USB-C Charging Cable
- Audio Cable
- Lanyard
- Clip

Image: An illustration showing the speaker, user guide, warranty card, USB-C charging cable, audio cable, lanyard, and clip included in the package.
1.2 At a Glance: Controls and Ports
Familiarize yourself with the speaker's buttons and connection ports:

Image: Top view of the speaker with buttons labeled 1-7.

Image: Side view of the speaker with ports labeled 11-14.
| No. | Feature | Description |
|---|---|---|
| 1 | Power Button | Turns the speaker on/off. |
| 2 | Mode Switch Button | Switches between Bluetooth, TF Card, USB Drive, and AUX modes. |
| 3 | EQ Button | Switches between Indoor and Outdoor EQ modes. |
| 4 | TWS Button | Initiates or disconnects True Wireless Stereo pairing. |
| 5 | MFB Button | Multi-Function Button (Play/Pause, Answer/Hang up calls). |
| 6 | Volume- | Decreases volume. |
| 7 | Volume+ | Increases volume. |
| 8 | TWS Indicator | Indicates TWS pairing status. |
| 9 | EQ Indicator Light | Indicates current EQ mode. |
| 10 | Power/Bluetooth Indicator | Indicates power and Bluetooth connection status. |
| No. | Feature | Description |
|---|---|---|
| 11 | Type-C Charging Port | For charging the speaker. |
| 12 | TF Card Slot | For playing audio from a TF (MicroSD) card. |
| 13 | USB Port | For playing audio from a USB drive. |
| 14 | AUX Port | For wired audio connection via 3.5mm audio cable. |
1.3 Install Lanyard
To attach the included lanyard for convenient carrying:
- Thread the lanyard through the lanyard hole located at the bottom right corner of the speaker.
- You may use the included clip to assist with the threading.
- Secure the lanyard firmly.

Image: A step-by-step diagram illustrating the process of attaching the lanyard to the speaker.
2. Operating Instructions
2.1 Charging the Speaker
Before first use, fully charge your speaker. Use the provided USB-C charging cable.
- Being Charged: The LED indicator turns solid red.
- Fully Charged: The LED indicator turns off.
- Low Battery Reminder: When the battery level is lower than 20%, the speaker will provide a voice prompt.

Image: An illustration of the speaker connected to a power source via a USB-C cable, with the charging indicator shown.
2.2 Power On/Off
- Power On: Press and hold the Power Button for 2 seconds. The blue light will turn on.
- Power Off: Press and hold the Power Button for 2 seconds. The light will turn off.
Note: If no device is connected to the speaker within 10 minutes of it being powered on, the speaker will automatically power off to save battery.

Image: A diagram showing the action of pressing and holding the power button for 2 seconds to turn the speaker on or off.
2.3 Bluetooth Pairing
To connect your speaker to a Bluetooth device:
- Ensure the speaker is powered on.
- On your phone or computer, turn on Bluetooth and search for available devices.
- Select "Doogee Field Rush" from the list to connect.
- Bluetooth to be paired: The blue light will rapidly flash.
- Bluetooth Connected: The blue light will be constantly on.
To disconnect Bluetooth:
- Method 1: Turn off Bluetooth on your cell phone or computer.
- Method 2: Long press the "Mode Switch Button" for 2 seconds. The speaker will automatically cut off the Bluetooth signal with the connected device. (Note: Bluetooth cannot be disconnected during call mode.)

Image: A visual guide demonstrating how to pair the speaker via Bluetooth, including phone settings.
2.4 TWS (True Wireless Stereo) Mode
Pair two DOOGEE Field Rush speakers for a stereo sound experience:
- Connect Speaker 1 to your mobile phone via Bluetooth.
- Power on Speaker 2, ensuring it is in pairing mode.
- Double-press the "TWS Button" on both Speaker 1 and Speaker 2. TWS pairing will be successful.
Note: If both speakers are turned on simultaneously again, they cannot perform TWS pairing automatically. You may need to re-initiate the process.
To disconnect TWS: Double-press the "TWS Button" on any of the connected speakers.

Image: An illustration showing two speakers being paired together using the TWS button for stereo sound.
2.5 Dual Device Connection
You can connect the speaker to two Bluetooth devices simultaneously:
- On the first device, open its Bluetooth pairing list, connect to the speaker, and complete pairing.
- Press and hold the "Mode Switch Button" on the speaker for 2 seconds to disconnect the Bluetooth connection and enter pairing mode.
- On the second device, open its Bluetooth pairing list, connect to the speaker, and complete pairing.
- On the first device, reopen its Bluetooth pairing list, manually click to reconnect to the speaker, and complete pairing.

Image: A diagram illustrating the steps to connect the speaker to two separate Bluetooth devices.
2.6 Mode Switching
The speaker supports multiple audio input modes. Use the "Mode Switch Button" to cycle through them:
- Bluetooth Mode: Default mode upon startup.
- USB Mode: Insert a USB drive into the USB port.
- TF Card Mode: Insert a TF (MicroSD) card into the TF card slot.
- AUX Mode: Insert a 3.5mm audio cable into the AUX port.
Note: In USB Drive/TF Card mode, the speaker supports MP3, WAV, WMA, APE, and FLAC audio formats.
Mode Memory: Upon startup, the device defaults to Bluetooth mode; however, if a USB flash drive, TF card, or AUX cable is inserted, the speaker will power on and resume the mode that was active during the previous session.

Image: An illustration detailing the different input modes (Type-C, TF, USB, AUX) and their respective ports on the speaker.
2.7 EQ Mode
Adjust the sound profile using the EQ button:
- Indoor Mode: Click the EQ button. Sound quality leans towards mid-low frequencies. The EQ indicator light will be off.
- Outdoor Mode: Click the EQ button again. Sound quality leans towards mid-high frequencies. The EQ indicator light will be white.
Memory Function: The device has a memory function after being powered off, and the last EQ mode is saved as the default.

Image: A diagram showing how to switch between Indoor and Outdoor EQ modes by pressing the EQ button.
2.8 Button Operation Summary
| Function | Action |
|---|---|
| Power On/Off | Press and hold for 2 seconds |
| Manually force unpairing (power off) | Press and hold for 5 seconds |
| Play / Pause | Single click MFB button |
| Answer the phone | Single click MFB button |
| Hang up the phone | Single click MFB button |
| Cancel dialing | Single click MFB button |
| Voice Assistant | Press and hold MFB button for 2 seconds |
| Reject calls | Press and hold MFB button for 2 seconds |
| Voice forwarding | Press and hold MFB button for 2 seconds |
| Volume Up | Single click Volume+ button |
| Next Track | Press and hold Volume+ button for 2 seconds |
| Volume Down | Single click Volume- button |
| Previous Track | Press and hold Volume- button for 2 seconds |
| Audio mode switch | Single click Mode Switch button |
| Disconnect Bluetooth | Press and hold Mode Switch button for 2 seconds |
| To enable/exit TWS mode | Double-click TWS button |
| Switch EQ modes | Single click EQ button |
| On/Off TWS Mode | Double Click TWS button |
3. Maintenance and Care
3.1 Cleaning the Speaker
Regularly clean the speaker enclosure to ensure clear sound quality and extend its lifespan.
- Before cleaning, disconnect all cables. After cleaning, ensure all components are completely dry before reconnecting the USB charger.
- Gently wipe the silicone protective sleeve and cables with a lint-free cloth dampened with water, 70% isopropyl alcohol, or 75% alcohol.
- Carefully clean the speaker grille and mesh with a dry, soft brush or cotton swab.
- Do not use any sharp or metal objects.
- Do not use compressed air.
- Do not use cleaning products containing bleach or hydrogen peroxide.
- Do not immerse the speaker enclosure in any cleaning solution.
- Do not rinse the speaker enclosure under running water.
3.2 Routine Maintenance
- To extend battery life, fully charge the speaker at least every three months. Battery life will vary depending on usage and environmental conditions.
- Do not expose the DOOGEE Field Rush to liquids while it is plugged in. Do not expose the DOOGEE Field Rush to water while charging, as this may cause permanent damage to the speaker or power supply.
- Do not charge the speaker after liquid has splashed onto it until the speaker is completely dry and clean. Charging while wet may damage the speaker.
3.3 Safety Guidelines
- This logo indicates the prohibition of naked flame sources such as a lighted candle on or near the device.
- The electrical and electronic equipment are part of a separate collection. Do not dispose of electrical or electronic equipment with unsorted municipal waste. Ensure it is collected separately for proper recycling.
- Use the product in temperate climates only.
- The product may be used by children aged 12 years or older and by those with reduced physical, sensory or mental abilities, or those lacking experience or knowledge, provided they are correctly supervised, or if the instructions related to the use of the device have been adequately given and if the risks involved have been understood. Children must not play with this device. Children should not clean or maintain the product without supervision.
- Always unplug the device before cleaning it.
- Clean the speaker with a soft dry cloth only. Never use solvents.
- Attention should be drawn to the environmental aspects of battery disposal.
- The battery (batteries or battery pack) shall not be exposed to excessive heat such as sunshine, fire or the like.
4. Troubleshooting
4.1 Force Shutdown/Reset
If the device freezes or becomes unresponsive, you can perform a force shutdown/reset:
- Simultaneously long-press the Power button and the Mode Switch Button.

Image: An illustration showing the simultaneous press of the Power and Mode Switch buttons to force shutdown or reset the speaker.
4.2 Restore Factory Settings
To restore the speaker to its original factory settings:
- While powered on, long-press the Mode Switch Button for 5 seconds.

Image: A diagram showing the action of long-pressing the Mode Switch button for 5 seconds to restore factory settings.
5. Specifications
| Feature | Specification |
|---|---|
| Item Model Number | Field Rush |
| Project/Certification Model | MS03 |
| Pairing Name | Doogee Field Rush |
| Bluetooth Version | V5.3 |
| Bluetooth Chip/Version | Mountain View BP1032A1, V5.3 Supported protocols: A2DP V1.3, AVRCP V1.6, HFP V1.7, HID V1.1, AVCTP V1.4, AVDTP V1.3, and SPP V1.2 |
| Audio Decoding | SBC/AAC |
| Working Frequency | 2.402-2.480GHz |
| Frequency Response | 50Hz-20KHz |
| Audio Signal-to-Noise Ratio | 80dB |
| Maximum Loudness | 105dB SPL@1m |
| Bluetooth Distance | ≥12 meters (barrier-free open environment) |
| Rated Power of the Whole Machine | 115W |
| Peak Power | 130W |
| Speaker Rated Power | 25W*2 tweeters + 65W*1 bass (1 diaphragm) |
| Speaker Peak Power | 30W*2 tweeters + 70W*1 bass (1 diaphragm) |
| Speaker Size | 52*52mm*2 + 92.5*92.5mm*1 |
| Control | Physical buttons (power button, mode switch button, EQ switch button, TWS button MFB key, volume minus key, volume plus key) |
| EQ Mode | Indoor mode/Outdoor mode |
| Connection Interface | USB/TF card/AUX |
| Waterproof Grade | IP67 |
| Battery Life 1 (30% volume) | 28.5H |
| Battery Life 2 (50% volume) | 21.5H |
| Battery Life 3 (70% volume) | 16H |
| Battery Life 4 (100% volume) | 9H |
| Battery Capacity | 11.1V/4000mAh (large capacity 12000mAh) |
| Battery Capacity-1 | 3.7V/4000mAh*3 series +2 parallel |
| Charging Port | Type-C |
| Charging Time | 6H |
| Power Input | 5V/3A |
| Overvoltage Protection | OVP-26V |
| Product Material | Silicone + Metal |
| Product Size | 250.4*100.8*135.5mm |
| Product Net Weight | 2.535kg |
| Accessories | USB-C charging cable (1pcs), audio cable (1pcs), lanyard (1pcs), clip (1pcs) |

Image: An exploded view of the speaker's internal components, highlighting the tweeters, subwoofer, and diaphragm, indicating 130W peak power.

Image: The speaker partially submerged in water, illustrating its IP67 waterproof and dustproof design.

Image: The speaker shown next to a camera, with dimensions (9.86 x 3.97 x 5.33 inches) highlighted to demonstrate its compact size.
6. User Tips
- For optimal sound quality, experiment with both Indoor and Outdoor EQ modes to match your listening environment.
- Utilize the TWS pairing feature with a second speaker for an immersive stereo experience, especially for larger gatherings or outdoor events.
- Remember the automatic power-off feature after 10 minutes of inactivity to conserve battery life.
- Keep the charging port cover securely closed when not charging to maintain the IP67 waterproof rating.
- If you experience any connectivity issues, try restoring factory settings as a first troubleshooting step.
7. Regulatory Compliance
7.1 FCC Statement
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
- This device may not cause harmful interference.
- This device must accept any interference received, including interference that may cause undesired operation.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
Warning: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
7.2 FCC Radiation Exposure Statement
The device has been evaluated to meet general RF exposure requirements. The device can be used in portable exposure conditions without restriction. Electromagnetic Compatibility Regulations 2016. Electrical Equipment (Safety) Regulations 2016.
7.3 EC Declaration
This product complies with the below listed UK Directives:
- Radio Equipment Regulations 2017
- The Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2012
- The Batteries and Accumulators (Placing on the Market) Regulations 2008 (as amended)
- The Waste Batteries and Accumulators Regulations 2009 (as amended)


Image: Regulatory compliance markings including CE and FC logos, and a diagram indicating compatible power adapter specifications (5-15W).
8. Additional Resources
For more detailed information and support, you may refer to the official user manual PDF:
