eppfun CM818 LE Audio Auracast Bluetooth 5.4 Over-Ear Headphones User Manual

Introduction

Thank you for choosing the eppfun CM818 LE Audio Auracast Bluetooth 5.4 Over-Ear Headphones. These headphones are designed to provide a high-quality audio experience with advanced features such as LE Audio, Auracast broadcasting and reception, Bluetooth 5.4 connectivity, and support for various AptX audio codecs including Lossless, Adaptive, and HD. Enjoy low-latency audio for gaming and video, along with versatile connectivity options.

Package Contents

Please verify that all items are present in your package:

• eppfun CM818 Over-Ear Headphones
• Charging Cable
• Audio Cable (3.5mm)
• Protective Case
• User Manual

Image: The eppfun CM818 Over-Ear Headphones in black, showcasing their design.

Controls and Indicators

Familiarize yourself with the headphone controls for optimal use.

Image: Diagram illustrating the location and function of buttons on the eppfun CM818 headphones, including On/Off, Volume +/-, Previous/Next track, Auracast Out/In, Reset, and Bluetooth Pairing.

• Power Button: Press and hold to power on/off.
• Volume Up/Next Track: Short press for volume up, long press for next track.
• Volume Down/Previous Track: Short press for volume down, long press for previous track.
• Multi-function Button (MFB): Play/pause, answer/end calls.
• Auracast Button: Activates Auracast broadcast or reception mode.
• LED Indicator: Displays power status, pairing mode, and charging status.

Setup

1. Charging the Headphones

Before first use, fully charge the headphones. Connect the provided charging cable to the USB-C port on the headphones and to a USB power source. The LED indicator will show charging status and turn off when fully charged.

2. Power On/Off

• Power On: Press and hold the Power button for approximately 3 seconds until the LED indicator flashes.
• Power Off: Press and hold the Power button for approximately 5 seconds until the LED indicator turns off.

3. Bluetooth Pairing

1. Ensure the headphones are powered off.
2. Press and hold the Power button for about 5-7 seconds until the LED indicator flashes blue and red alternately, indicating pairing mode.
3. On your device (smartphone, tablet, computer), enable Bluetooth and search for available devices.
4. Select "eppfun CM818" from the list of devices.
5. Once connected, the LED indicator will flash blue slowly.

The headphones support Dual Connection, allowing simultaneous connection to two Bluetooth devices. For example, you can connect to a tablet for media and a smartphone for calls.

Image: The eppfun CM818 headphones connected simultaneously to a tablet playing music and a smartphone receiving a call, demonstrating the dual connection feature.

4. Auracast Functionality

The eppfun CM818 headphones support Auracast technology, enabling them to act as both a receiver and a broadcaster of audio streams. This allows multiple Auracast-compatible devices to receive audio from a single source simultaneously.

• Auracast Out (Broadcasting): To broadcast audio from your headphones to other Auracast receivers, press the dedicated Auracast button. The LED indicator will show a specific pattern for broadcasting mode. This feature is typically used when the headphones are connected to an audio source via a wired connection or acting as a gateway.
• Auracast In (Receiving): To receive an Auracast broadcast from a compatible transmitter (e.g., an eppfun Auracast transmitter for TV), press the Auracast button to enter reception mode. The headphones will scan for available Auracast streams.

Image: Headphones with "AURACAST Out" text and an outgoing sound wave icon, indicating broadcasting mode.

Image: Headphones with "AURACAST IN" text and an incoming sound wave icon, along with two smaller headphone icons, indicating reception mode from a broadcast.

For optimal Auracast performance, it is recommended to use eppfun brand related transmitters and adapters.

Operating Instructions

1. Audio Playback

• Play/Pause: Press the MFB once.
• Volume Up: Short press the Volume Up button.
• Volume Down: Short press the Volume Down button.
• Next Track: Long press the Volume Up button.
• Previous Track: Long press the Volume Down button.

2. Call Management

• Answer/End Call: Press the MFB once.
• Reject Call: Press and hold the MFB for 2 seconds.
• Transfer Call: During a call, press and hold the MFB for 2 seconds to transfer the call between headphones and phone.

3. Audio Codecs and Quality

The eppfun CM818 headphones support a range of audio codecs to deliver high-quality sound, including SBC, AAC, AptX, AptX HD, AptX Adaptive, AptX Lossless, and LC3 (for LE Audio). The headphones will automatically select the best available codec supported by your connected device.

Image: A legend showing different colored dots corresponding to various audio codecs: AptX Lossless (red), AptX Adaptive (orange/white), AptX HD (green), AptX LL (white), AptX (cyan), AAC (purple), SBC (blue), and LE Audio (green/white). These colors may be reflected in the headphone's LED indicator to show the active codec.

For the highest fidelity, the headphones support AptX Lossless, providing uncompressed audio quality over Bluetooth when paired with a compatible source device.

4. Low Latency for Gaming and Video

With LE Audio and optimized AptX codecs, the CM818 headphones offer a low latency experience (as low as 20ms), ensuring audio and video synchronization. This is particularly beneficial for gaming and watching movies, eliminating noticeable delays.

Image: Two individuals wearing eppfun CM818 headphones while playing a video game on a console connected to a large screen TV, illustrating the low-latency feature for gaming.

5. Wired Connection (AUX Mode)

To use the headphones with non-Bluetooth devices or when the battery is depleted, connect the provided 3.5mm audio cable to the headphone's AUX port and to your audio source. In AUX mode, the headphones operate passively and do not require power.

Maintenance

• Cleaning: Use a soft, dry cloth to clean the headphones. Do not use harsh chemicals or abrasive materials.
• Ear Cushions: The genuine leather ear cushions are designed for comfort. If necessary, they can be gently wiped with a damp cloth and mild soap, then air-dried.
• Storage: When not in use, store the headphones in the provided protective case to prevent damage. Avoid exposing them to extreme temperatures, humidity, or direct sunlight.
• Battery Care: To prolong battery life, avoid fully discharging the headphones frequently. Charge them regularly, even if not in constant use.

Troubleshooting

Specifications

Warranty and Support

eppfun products come with a standard manufacturer's warranty. For detailed warranty information, product support, or to contact customer service, please visit the official eppfun store or website.

Official eppfun Store: eppfun Store on Amazon