1. Introduction
The Promate Capsule-3 is a portable Bluetooth speaker designed to deliver high-definition audio with versatile connectivity options. This manual provides essential information for setting up, operating, and maintaining your speaker to ensure optimal performance.
2. What's in the Box
Carefully unpack your Promate Capsule-3 speaker. The package should contain the following items:
- 1 x Promate Capsule-3 Bluetooth Speaker
- 1 x User Manual
3. Product Overview
The Promate Capsule-3 speaker features a 5W audio output, True Wireless Stereo (TWS) technology for pairing two speakers, and integrated rainbow LED lights. It supports multiple playback modes including Bluetooth v5.3, TF Card, USB Media Port, and 3.5mm AUX input. The compact design includes a lanyard for portability, and it is powered by a built-in 500mAh rechargeable lithium battery providing up to 6 hours of playtime.
Video 1: Promate Capsule-3 Speaker Overview. This video provides a brief introduction to the Promate Capsule-3 Bluetooth Speaker, highlighting its key features and design.

Image 1: True Wireless Stereo Sound. The image displays the Promate Capsule-3 speaker, emphasizing its 5-watt output and True Wireless Stereo (TWS) capability for enhanced audio.

Image 2: Rainbow LED Lights. This image shows the speaker with its vibrant rainbow LED lights, illustrating its ability to enhance the ambiance of any environment.
4. Setup
4.1 Charging the Speaker
- Connect the charging cable to the DC 5V port on the speaker.
- Connect the other end of the cable to a USB power adapter (not included) or a computer's USB port.
- The LED indicator will show charging status. Once fully charged, the indicator will change or turn off.
4.2 Powering On/Off
- To power on, press and hold the Power button until the LED lights illuminate and an audible prompt is heard.
- To power off, press and hold the Power button again until the LED lights turn off and an audible prompt is heard.
5. Operating Instructions
5.1 Bluetooth Pairing
- Ensure the speaker is powered on and in Bluetooth pairing mode (LED indicator will flash).
- On your device (smartphone, tablet, laptop), enable Bluetooth and search for available devices.
- Select "Promate Capsule-3" from the list.
- Once paired, the speaker will emit an audible confirmation, and the LED indicator will stop flashing.
5.2 True Wireless Stereo (TWS) Pairing
To achieve stereo sound, you can pair two Promate Capsule-3 speakers together:
- Ensure both Capsule-3 speakers are powered on and not connected to any Bluetooth device.
- On one speaker (this will be the primary speaker), press and hold the TWS pairing button (refer to controls section for button identification).
- The speakers will search for each other and automatically pair. An audible prompt will confirm successful TWS connection.
- Now, connect your device to the primary speaker via Bluetooth as described in section 5.1. Audio will play in stereo through both speakers.

Image 3: Easy Music Navigation. This image highlights the speaker's control buttons, indicating simple navigation for music playback and call management.
5.3 Multi-Mode Playback
The speaker supports various audio input methods:
- Bluetooth: Connect wirelessly to your device (see 5.1).
- TF Card: Insert a TF (Micro SD) card loaded with audio files into the TF card slot. The speaker will automatically switch to TF card mode and begin playback.
- USB Media Port: Insert a USB flash drive with audio files into the USB port. The speaker will automatically switch to USB mode and begin playback.
- AUX Input: Connect an audio device using a 3.5mm AUX cable to the AUX port. The speaker will automatically switch to AUX mode.

Image 4: Multiple Connectivity Options. The image illustrates the various input ports available on the speaker, including Wireless BT, AUX Port, USB Drive, and TF Card slot.
6. Controls
The Promate Capsule-3 features intuitive touch controls and quick access buttons for managing your audio experience:
- Power Button: Press and hold to power on/off.
- Play/Pause Button: Press to play or pause audio. During a call, press to answer/end.
- Volume Up (+): Press to increase volume. Press and hold for next track.
- Volume Down (-): Press to decrease volume. Press and hold for previous track.
- Mode Button (M): Press to switch between Bluetooth, TF Card, USB, and AUX modes.
- LED Light Control: Specific button or combination (refer to speaker markings) to cycle through or turn off LED light modes.
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the speaker's exterior. Do not use abrasive cleaners or solvents.
- Storage: Store the speaker in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, fully charge the speaker before first use and recharge it regularly, even if not in use for extended periods. Avoid fully discharging the battery frequently.
- Water Resistance: This speaker is NOT waterproof. Avoid exposure to water or excessive moisture.

Image 5: Long-Lasting Battery. The image highlights the speaker's extended battery life, indicating over 6 hours of continuous playtime on a single charge.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Speaker does not power on. | Low battery. | Charge the speaker fully. |
| Cannot pair via Bluetooth. | Speaker not in pairing mode; device Bluetooth off; too far from speaker. | Ensure speaker is in pairing mode. Turn device Bluetooth off/on. Move device closer to speaker (within 10 meters). |
| No sound. | Volume too low; incorrect input mode; paused playback. | Increase volume. Check input mode (Bluetooth, AUX, TF, USB). Ensure music is playing. |
| TWS pairing fails. | Speakers already connected to another device; too far apart. | Disconnect speakers from any Bluetooth devices. Ensure speakers are close to each other. Try re-initiating TWS pairing. |
9. Specifications
| Feature | Detail |
|---|---|
| Model Name | Capsule-3 |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Speaker Output | 5 Watts |
| Bluetooth Version | v5.3 |
| Wireless Range | Up to 10 meters |
| Battery Capacity | Built-in 500mAh rechargeable lithium battery |
| Playtime | Up to 6 hours |
| Charging Port | DC 5V (USB) |
| Connectivity Options | Bluetooth, 3.5mm AUX, USB Port, TF Card Slot |
| Control Method | Touch buttons |
| Special Features | LED Lights, True Wireless Stereo (TWS) support, Portable design |
| Product Dimensions | 9D x 9W x 16H Centimeters |
| Item Weight | 410 Grams |
| Water Resistance | Not Water Resistant |
10. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the warranty card included with your product or visit the official Promate website. Keep your purchase receipt as proof of purchase.

Image 6: Music On-The-Go. This image depicts the speaker in an outdoor setting, highlighting its compact and portable design, suitable for travel and outdoor activities.