User Manual: kamapulo F4 Rechargeable & Portable Personal FM Radio Headphones

1. Introduction

Thank you for choosing the kamapulo F4 Rechargeable & Portable Personal FM Radio Headphones. These headphones are designed to provide clear FM radio reception and comfortable listening for various activities such as daily work, hiking, and jogging. Featuring a built-in DSP filter chip, automatic station search, and a long-lasting rechargeable battery, the F4 offers a convenient and enjoyable audio experience. This manual provides detailed instructions for setup, operation, and maintenance to ensure optimal performance of your device.

Figure 1: kamapulo F4 FM Radio Headphones, showing the main unit with control buttons and digital display.

2. Product Overview

2.1. What's in the Box

• F4 FM radio headphones
• 3.5mm audio cable
• USB charging cable
• Quick Start Guide

2.2. Key Features

• Best Reception FM Headphones: Built-in premium DSP filter chip for super receiving sensitivity and stable/clear reception. (FM only, no AM).
• Automatic Search & Store, Preset: Digital FM headset with automatic search and storage of stations. M1 button for one-click access to a favorite preset station.
• Rechargeable Lithium Battery Operated: Built-in rechargeable lithium battery provides up to 24 hours of use on a single charge (approx. 2.5 hours charging time).
• AUX Available/Crystal Clear Sound: Includes a 3.5mm AUX jack and cable for wired connection to smartphones, PCs, MP3 players, etc.
• Compact & Comfortable: Foldable, pocketable, and lightweight design (approx. 180g). Soft earmuffs and adjustable head strap for comfortable use and noise blocking.

Figure 2: The F4 headphones feature a foldable design for easy portability.

Figure 3: Close-up of the F4 headset controls, showing the digital display, SCAN, M1, volume, and channel buttons.

Figure 4: Visual representation of the F4 headphones' rechargeable battery, showing 2.5 hours charging time for 24 hours playing time.

Figure 5: The F4 headphones are designed for a comfortable fit, suitable for extended wear.

3. Setup

3.1. Charging the Headphones

Before first use, fully charge the headphones. Connect the supplied USB charging cable to the micro-USB port on the headphones and the other end to a USB power source (e.g., computer USB port, USB wall adapter). The charging indicator light will illuminate during charging and turn off when fully charged. A full charge takes approximately 2.5 hours and provides up to 24 hours of playback.

3.2. Initial Power On

Press and hold the power button (usually integrated with the volume/channel controls) until the digital display illuminates, indicating the headphones are powered on.

4. Operating Instructions

4.1. Power On/Off

• To Power On: Press and hold the Power/Play/Pause button until the display lights up.
• To Power Off: Press and hold the Power/Play/Pause button until the display turns off.

4.2. FM Radio Tuning

• Automatic Search & Store: Press the SCAN button once. The headphones will automatically scan and store available FM stations.
• Manual Search: Use the CH+ and CH- buttons to manually tune to desired frequencies.
• Preset Favorite Station (M1): To save a favorite station, tune to the desired frequency, then press and hold the M1 button until the display confirms the save. To recall the preset station, simply press the M1 button once.

4.3. Volume Control

Use the V+ button to increase volume and the V- button to decrease volume.

4.4. AUX Mode

The F4 headphones can also be used as a wired headset. Connect one end of the supplied 3.5mm audio cable to the AUX jack on the headphones and the other end to the audio output of your smartphone, PC, MP3 player, or other compatible device. The headphones will automatically switch to AUX mode.

Figure 6: The F4 headphones connected via a 3.5mm AUX cable to an external device.

4.5. Instructional Video

Video 1: A demonstration of the kamapulo F4 FM Radio Headphones, showcasing its foldable design, control buttons for manual and automatic station search, memory function for favorite stations, charging process, and AUX cable connection.

5. Maintenance

• Keep the headphones dry. Do not expose to rain or moisture.
• Clean the headphones with a soft, dry cloth. Do not use harsh chemicals or abrasive materials.
• Store the headphones in a cool, dry place when not in use.
• Avoid extreme temperatures.
• Do not attempt to disassemble or modify the headphones. This will void the warranty.

6. Troubleshooting

7. Specifications

8. Warranty and Support

For any questions, concerns, or technical support regarding your kamapulo F4 headphones, please contact the seller or manufacturer directly through the platform where the product was purchased. Please refer to your purchase documentation for specific warranty details and contact information.