Introduction
The Portronics Bubble Max Wireless Keyboard offers versatile connectivity and a comfortable typing experience. This manual provides detailed instructions for setting up, operating, maintaining, and troubleshooting your keyboard. It features dual wireless connectivity (Bluetooth 5.0 and 2.4 GHz USB), noiseless keys, and a spill-resistant design, allowing connection to up to two devices simultaneously.
Product Overview
Familiarize yourself with the key components of your Portronics Bubble Max Wireless Keyboard.

Image: Keyboard Components and Battery/Dongle Location. This image illustrates the layout of the keyboard, including function keys, the dedicated Rupee symbol, and the location of the On/Off switch, battery compartment for two AAA batteries, and the USB dongle slot on the underside.
The keyboard features a standard layout with additional function (Fn) keys for multimedia and shortcuts. The USB dongle for 2.4 GHz connectivity and the battery compartment are located on the underside of the keyboard. An On/Off switch is also present for power management.
Setup
1. Battery Installation
- Locate the battery compartment on the underside of the keyboard.
- Open the battery compartment cover.
- Insert two AAA batteries, ensuring correct polarity (+/-).
- Close the battery compartment cover.
- Turn on the keyboard using the On/Off switch.
2. 2.4 GHz Wireless Connection
- Locate the USB dongle stored in the battery compartment of the keyboard.
- Remove the USB dongle.
- Plug the USB dongle into an available USB port on your computer or device.
- The keyboard should automatically connect.
3. Bluetooth 5.0 Connection
- Ensure the keyboard is turned on.
- Press the Fn key simultaneously with the Bluetooth pairing key (refer to the keyboard diagram for specific key, often F1 or F2 with a Bluetooth icon) to enter Bluetooth pairing mode. The indicator light will flash.
- On your device (PC, laptop, Mac, smartphone), go to Bluetooth settings.
- Search for available devices and select "Portronics Bubble Max" (or similar name).
- Follow any on-screen prompts to complete the pairing process.

Image: Dual Wireless Connectivity. This image shows the keyboard in a desktop setup, highlighting its capability for both 2.4 GHz wireless and Bluetooth connections for a seamless work experience.

Image: Pairs with Your Devices. This image demonstrates the keyboard's ability to connect to multiple devices, such as a laptop via 2.4G wireless and a smartphone via Bluetooth 5.0, allowing for convenient switching.
Operating Instructions
Switching Between Devices
The keyboard supports connecting up to two devices simultaneously. To switch between connected devices (e.g., 2.4 GHz USB and Bluetooth), use the designated function keys (often Fn + F1/F2/F3, refer to your keyboard's specific markings).
Shortcut Keys (Fn Hotkeys)
The keyboard includes 14 Fn-hotkeys for quick access to various functions. Press the Fn key along with the desired function key (F1-F12, etc.) to activate its secondary function. These may include media controls, volume adjustment, and other system shortcuts. A dedicated Rupee symbol key is also integrated.
Noiseless Typing
The keyboard is designed with noiseless keys for a quiet typing experience.

Image: Noiseless Typing. This image shows hands using the keyboard, highlighting the quiet and comfortable typing experience provided by its noiseless key switch design.
Auto Power Saving
To conserve battery life, the keyboard automatically enters sleep mode after 10 minutes of inactivity. To wake the keyboard, simply press any key.

Image: Auto Power Saving Feature. This image depicts a desktop environment where the monitor screen is dimmed, indicating the keyboard has entered sleep mode to save battery power after a period of inactivity.
Maintenance
Cleaning and Care
The Portronics Bubble Max keyboard features a spill-resistant design, offering protection against accidental water splashes. In case of spills, gently wipe the keyboard clean with a soft, dry cloth. Avoid using harsh chemicals or abrasive materials. The keys are UV printed with anti-fade characters for long-lasting visibility.

Image: Durable and Spill-Resistant Design. This close-up image shows water droplets on the keyboard surface, illustrating its spill-resistant capability which allows for easy cleaning after accidental liquid exposure.
Troubleshooting
- Keyboard not connecting via 2.4 GHz:
Ensure the USB dongle is securely plugged into a working USB port. Try a different USB port. Ensure the keyboard is turned on and has fresh batteries. - Keyboard not connecting via Bluetooth:
Ensure Bluetooth is enabled on your device. Make sure the keyboard is in pairing mode (indicator light flashing). Remove any previous pairings of the keyboard from your device's Bluetooth settings and attempt to pair again. Ensure the keyboard is turned on and has fresh batteries. - Keys not responding or random keystrokes:
Replace the AAA batteries with new ones. Ensure there is no interference from other wireless devices. If using 2.4 GHz, try moving the dongle closer to the keyboard. - Keyboard enters sleep mode too quickly:
This is a power-saving feature. Press any key to wake the keyboard. - Connectivity issues at a distance:
The keyboard has a working distance of up to 10 meters. Ensure you are within this range and there are no significant obstructions between the keyboard and the receiver/device.
Specifications
| Brand | Portronics |
| Model Number | POR-1889 |
| Series | Bubble Max |
| Connectivity Technology | Bluetooth 5.0, 2.4 GHz Wireless |
| Compatible Devices | Laptop, Smartphone, PC, Mac |
| Operating System | Windows 10 (and other compatible OS) |
| Power Source | Battery Powered (2 x AAA, not included) |
| Item Weight | 300 g |
| Product Dimensions | 29 x 14 x 2.5 cm |
| Special Features | Dual Connectivity, Noiseless Keys, Spill-Resistant, Multimedia Hot Keys, Auto Power Saving |
Warranty and Support
The Portronics Bubble Max Wireless Keyboard comes with a 1-year warranty from the date of purchase. For warranty claims, technical support, or any product-related inquiries, please contact Portronics Digital Pvt Ltd.
Manufacturer Contact:
Portronics Digital Pvt Ltd
Unit No. 1082-1090, 10th Floor, Block-B, Vegas, Dwarka, Sec-14, New Delhi-110075
Phone: 9555-245-245
Please retain your purchase receipt for warranty validation.
