1. Introduction
This manual provides detailed instructions for the safe and efficient operation of your BOHINI T77 Bluetooth Speaker. Please read this manual thoroughly before using the product and retain it for future reference.
The BOHINI T77 is a powerful portable Bluetooth speaker designed to deliver high-quality stereo sound with deep bass, dynamic LED lighting, and versatile playback options. It features True Wireless Stereo (TWS) pairing for an enhanced audio experience and a long-lasting battery for extended use.

Image: The BOHINI T77 Bluetooth Speaker, showcasing its black finish and vibrant LED lighting.
2. Safety Information
- Do not expose the speaker to water or moisture. This product is not waterproof.
- Avoid extreme temperatures and direct sunlight.
- Do not attempt to disassemble or repair the unit yourself. Refer all servicing to qualified personnel.
- Keep the speaker away from heat sources, such as radiators, stoves, or other heat-producing appliances.
- Use only the provided charging cable and adapter.
- Ensure proper ventilation when operating the speaker.
- Do not block any ventilation openings.
3. Package Contents
Please check that all items are present in the package:
- 1 x BOHINI T77 Wireless Portable Speaker
- 1 x USB Charger cable
- 1 x AUX 3.5mm Audio cable
- 1 x User manual
4. Product Overview
Familiarize yourself with the various parts and controls of your BOHINI T77 speaker.

Image: Detailed diagram of the BOHINI T77 speaker's top control panel, showing inputs for microphone, TF card, AUX, USB, DC5V charging, power, and various control buttons including TWS, EQ, Play/Pause, Volume, and LED controls.
Control Panel Functions:
- MIC Input: Connect an external microphone.
- TF Port: Insert a TF (MicroSD) card for audio playback.
- AUX IN: Connect external audio devices via a 3.5mm audio cable.
- USB Port: Insert a USB flash drive for audio playback.
- DC5V: Charging port.
- Power: Power On/Off switch.
- TWS Mode: Button for True Wireless Stereo pairing.
- VOCAL CUT: Function to reduce vocals in music (for karaoke).
- Recording/DEL: Record audio or delete files.
- MIC PRIORITY: Prioritizes microphone audio over music.
- LED: Control LED light effects.
- EQ: Switch between Indoor, Outdoor, and Bass sound modes.
- Play/Pause: Play or pause audio playback.
- Mode/Shift: Switch between input modes (Bluetooth, TF, AUX, USB).
- Previous Song / Next Song: Navigate tracks.
- VOLUME PRESS BASS/TREBLE/MIC VOL/ECHO: Multi-function knob for adjusting various audio levels.
- LED Screen: Displays current mode and status.
5. Setup
5.1 Charging the Speaker
- Connect the provided USB charger cable to the DC5V port on the speaker.
- Connect the other end of the USB cable to a compatible USB power adapter (not included) or a computer's USB port.
- The charging indicator light will illuminate. It will turn off or change color once fully charged.
- A full charge provides up to 15 hours of playback, depending on volume level and LED light usage.
5.2 Power On/Off
- To power on, press and hold the Power button until the LED screen illuminates.
- To power off, press and hold the Power button again until the LED screen turns off.
6. Operating Instructions
6.1 Bluetooth Pairing
- Ensure the speaker is powered on and in Bluetooth mode (indicated by "BLUE" on the LED screen). If not, press the Mode/Shift button to switch to Bluetooth mode.
- On your mobile device, enable Bluetooth and search for available devices.
- Select "BOHINI T77" from the list of devices.
- Once paired, the speaker will emit a confirmation sound.
6.2 True Wireless Stereo (TWS) Pairing
TWS allows you to connect two BOHINI T77 speakers wirelessly for a stereo sound experience.
- Ensure both BOHINI T77 speakers are powered on and in Bluetooth mode, but not yet connected to any device.
- On one speaker (this will be the primary speaker), press the TWS button. The speaker will emit a pairing tone.
- The primary speaker will automatically search for and connect to the second speaker. Once connected, both speakers will emit a confirmation sound.
- Now, connect your mobile device to the primary speaker via Bluetooth as described in section 6.1.
- Audio will now play through both speakers in stereo.

Image: Two BOHINI T77 speakers positioned to demonstrate True Wireless Stereo (TWS) pairing, enhancing the audio experience for a large screen display.
6.3 Multiple Playback Modes
The speaker supports various audio input methods:
- Bluetooth: Wireless connection (see 6.1).
- TF Card: Insert a TF (MicroSD) card into the TF Port. The speaker will automatically switch to TF card mode and begin playback.
- AUX Input: Connect an external audio device (e.g., smartphone, MP3 player) to the AUX IN port using the 3.5mm audio cable. Press the Mode/Shift button to select AUX mode.
- USB Flash Drive: Insert a USB flash drive into the USB Port. The speaker will automatically switch to USB mode and begin playback.
6.4 EQ Modes
Customize your sound experience by switching between three Equalizer (EQ) modes:
- Indoor Mode: Optimized for high-quality sound and outstanding bass in enclosed spaces.
- Outdoor Mode: Provides loud and clear sound for open environments.
- Bass Mode: Enhances deep bass for a more impactful audio experience.
To switch modes, short-press the EQ button on the control panel.

Image: The BOHINI T77 speaker control panel highlighting the EQ button, with visual representations of Indoor, Outdoor, and Bass sound effects for different listening environments.
6.5 Dynamic LED Lights
The speaker features dynamic LED lights that synchronize with the music.
- To turn the LED lights on or off, press the LED button on the control panel.
- Pressing the LED button repeatedly may cycle through different light patterns or turn them off.

Image: The BOHINI T77 speaker showcasing its vibrant, beat-driven LED light show, with examples of various color combinations.
6.6 Microphone Usage
Connect a microphone (not included) to the MIC Input port for karaoke or public address functions.
- Adjust microphone volume and echo using the multi-function knob.
- Use the VOCAL CUT button to reduce vocals in music for karaoke.
- Press MIC PRIORITY to ensure the microphone audio is prominent over background music.
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the speaker's exterior. Do not use liquid cleaners or abrasive materials.
- Storage: When not in use for extended periods, store the speaker in a cool, dry place away from direct sunlight.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge the speaker regularly, even if not in use.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Battery is depleted. | Charge the speaker using the provided USB cable. |
| No sound | Volume is too low; incorrect input mode; device not paired. | Increase volume; press Mode/Shift to select correct input; re-pair Bluetooth device. |
| Bluetooth pairing fails | Speaker is too far from device; another device is connected; speaker not in pairing mode. | Move device closer; disconnect from other devices; ensure speaker is in Bluetooth mode. |
| TWS pairing fails | Speakers are too far apart; one speaker already paired to a device. | Ensure speakers are close; disconnect both speakers from any devices before TWS pairing. |
| Distorted sound | Volume too high; audio source quality is low. | Reduce volume; try a different audio source. |
9. Specifications
| Feature | Detail |
|---|---|
| Brand | BOHINI |
| Model Name | T77 |
| Speaker Type | Subwoofer |
| Connectivity Technology | Bluetooth 5.0, Auxiliary, USB |
| Speaker Maximum Output Power | 160 Watts (Peak) |
| Audio Output Mode | Stereo |
| Woofer Diameter | 5.25 Inches |
| Tweeter Diameter | 2 Inches (x2) |
| Battery Capacity | 16000 Milliamp Hours |
| Playtime | Up to 15 hours (volume dependent) |
| Product Dimensions | 6.7"D x 7.87"W x 16.7"H |
| Item Weight | 11.82 pounds |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Special Features | Bass Boost, LED Light, Multiple Playback Modes, TWS Pairing, USB Port, Microphone Input |
| Is Waterproof | False |
10. Warranty and Support
The BOHINI T77 Bluetooth Speaker comes with a Limited Warranty. Please refer to the warranty card included in your package for specific terms and conditions.
For technical support, troubleshooting assistance, or warranty claims, please contact BOHINI customer service through the retailer where the product was purchased or visit the official BOHINI website for contact information.