ACEFAST N4 Silicone Neckband Wireless Earphone User Manual

Introduction

The ACEFAST N4 Silicone Neckband Wireless Earphone is designed for an immersive audio experience with extended battery life and versatile features. This manual provides detailed instructions on how to set up, operate, and maintain your earphones to ensure optimal performance and longevity.

Figure 1: ACEFAST N4 Neckband Wireless Earphones with LED display

What's in the Box

Please check the package contents upon unboxing:

• ACEFAST N4 Neckband Wireless Earphones
• Charging Cable (Type-C)
• Replaceable Eartips Set
• User Manual

Figure 2: Product packaging illustrating included items and key features.

Product Overview

The ACEFAST N4 earphones feature a comfortable neckband design, an LED digital display, and magnetic earbuds for convenient storage.

• LED Digital Display: Shows battery level and volume status.
• Highly-Sensitive Driver Unit: Delivers clear and rich audio.
• TF Card Support: Allows for direct music playback without a connected device.
• Magnetic Absorption Design: Earbuds can be magnetically attached when not in use to prevent tangling.
• Integrated Controls: Buttons for volume adjustment, play/pause, and track navigation.

Figure 3: Angled view of the earphones highlighting the neckband and earbud design.

Figure 4: Close-up of an earbud, showcasing the highly-sensitive driver unit.

Specifications

Setup

1. Charging the Earphones

1. Connect the provided Type-C charging cable to the charging port on the neckband.
2. Connect the other end of the cable to a USB power adapter (not included) or a computer's USB port.
3. The LED digital display will show the charging status. A full charge takes approximately 3 hours.
4. For quick use, a 10-minute charge provides up to 10 hours of music playback.

2. Power On/Off

• Power On: Press and hold the Multi-function button (usually the center button on the control panel) for a few seconds until the LED display lights up and you hear a power-on prompt.
• Power Off: Press and hold the Multi-function button again for a few seconds until the LED display turns off and you hear a power-off prompt.

3. Bluetooth Pairing

1. Ensure the earphones are powered off.
2. Press and hold the Multi-function button for approximately 5-7 seconds until the LED display flashes, indicating pairing mode.
3. On your device (smartphone, tablet, etc.), enable Bluetooth and search for available devices.
4. Select 'ACEFAST N4' from the list of devices.
5. Once connected, the LED display will show a steady light or a specific indicator, and you will hear a confirmation tone.

4. TF Card Usage

1. Insert a TF (MicroSD) card with your desired music files into the TF card slot on the neckband.
2. The earphones will automatically detect the TF card and switch to TF card playback mode.
3. You can switch between Bluetooth and TF card modes using the mode button (if available) or by disconnecting Bluetooth.

Operating Instructions

1. Music Playback

• Play/Pause: Press the Multi-function button once.
• Next Track: Press and hold the 'Volume Up' button.
• Previous Track: Press and hold the 'Volume Down' button.

2. Call Functions

• Answer/End Call: Press the Multi-function button once.
• Reject Call: Press and hold the Multi-function button for 2 seconds.
• Redial Last Number: Double-press the Multi-function button.

3. Volume Control

• Increase Volume: Press the 'Volume Up' button.
• Decrease Volume: Press the 'Volume Down' button.

4. Mode Switching

When a TF card is inserted, the earphones support both Bluetooth and TF card playback. The earphones will prioritize TF card playback if inserted. To switch back to Bluetooth, ensure the TF card is removed or manually switch modes if a dedicated button is present (refer to specific product button layout if available).

Maintenance

• Cleaning: Use a soft, dry cloth to clean the earphones. Do not use harsh chemicals or abrasive materials.
• Storage: When not in use, store the earphones in a cool, dry place, away from direct sunlight and extreme temperatures. The magnetic absorption design helps keep the earbuds tidy.
• Water Resistance: The earphones are IPX4 waterproof, meaning they are resistant to splashing water from any direction. Do not submerge them in water or expose them to heavy rain.
• Eartips: Regularly clean the eartips to prevent wax buildup. Replace them if they become damaged or uncomfortable.

Troubleshooting

• Earphones won't turn on: Ensure the earphones are fully charged.
• Cannot pair with device: Make sure Bluetooth is enabled on your device and the earphones are in pairing mode. Try restarting both devices.
• No sound: Check the volume levels on both the earphones and your connected device. Ensure the earphones are properly connected.
• Poor sound quality: Ensure there are no obstructions between the earphones and your device. Move closer to your device to improve connection stability.
• TF card not recognized: Ensure the TF card is inserted correctly and contains compatible audio files. Try reinserting the card or using a different TF card.

User Tips

• For optimal comfort during sports, ensure the neckband sits securely around your neck and the eartips fit snugly in your ears.
• Utilize the TF card feature for music playback when you want to save phone battery or don't have your phone nearby.
• Keep an eye on the LED digital display to monitor battery life, especially before long listening sessions.
• The magnetic earbuds are great for preventing tangles when the earphones are not in use.

Warranty & Support

Your ACEFAST N4 earphones come with a standard manufacturer's warranty. Please retain your proof of purchase for any warranty claims. For technical support or further assistance, please refer to the contact information provided on the product packaging or the official ACEFAST website.