Introduction
The Altec Lansing MZX856 Bluetooth Active Earbuds are designed for active use, featuring a durable, waterproof construction and wireless audio capabilities. This manual provides essential information for the proper setup, operation, and maintenance of your earbuds.
Package Contents
Verify that all items are present in your package:
- Altec Lansing MZX856 Bluetooth Active Earbuds
- 3 sets of Freebit ear tips (Small, Medium, Large)
- Flat tangle-free charging cable
- Carry pouch

Image: Altec Lansing MZX856 Bluetooth Active Earbuds with included accessories.
Product Overview
The MZX856 earbuds feature an inline control unit for managing audio playback, calls, and power. The earbuds are connected by a flat, tangle-free cable.
Control Unit
The inline control unit typically includes:
- Power/Multi-function Button: Used for powering on/off, pairing, play/pause, and call management.
- Volume Up Button: Increases volume, also used for skipping tracks forward.
- Volume Down Button: Decreases volume, also used for skipping tracks backward.
- Microphone: For hands-free calls.
- Charging Port: Micro USB port, typically covered by a waterproof flap.

Image: Close-up view of the inline control unit on the Altec Lansing MZX856 earbuds, showing buttons and the Altec Lansing logo.
Setup
Charging the Earbuds
- Locate the charging port on the inline control unit, usually covered by a rubber flap.
- Open the flap and connect the provided USB charging cable to the port.
- Connect the other end of the USB cable to a USB power source (e.g., computer USB port, wall adapter).
- The LED indicator will illuminate during charging and change color or turn off when fully charged. A full charge provides approximately 20 hours of battery life.
Powering On/Off
- To Power On: Press and hold the Power/Multi-function button until the LED indicator lights up and you hear an audible prompt.
- To Power Off: Press and hold the Power/Multi-function button until the LED indicator turns off and you hear an audible prompt.
Bluetooth Pairing
- Ensure the earbuds are powered off and fully charged.
- Press and hold the Power/Multi-function button for approximately 5-7 seconds until the LED indicator flashes red and blue alternately, indicating pairing mode.
- On your device (smartphone, tablet, etc.), enable Bluetooth and search for available devices.
- Select "MZX856" from the list of found devices.
- Once paired, the LED indicator will typically flash blue slowly, and you will hear a confirmation tone or voice prompt.
- If prompted for a password, enter "0000".
Wearing the Earbuds
For optimal sound quality and a secure fit, choose the correct size of Freebit ear tips. The earbuds are designed to fit snugly within your ear canal and have an ear hook design for stability during movement.
- Select the ear tips that provide the best seal and comfort.
- Insert each earbud into the corresponding ear (L for left, R for right).
- Adjust the ear hook to rest securely in the outer part of your ear.

Image: A person wearing the Altec Lansing MZX856 earbuds, demonstrating the secure fit for active use.
Operating Instructions
Music Playback
- Play/Pause: Press the Power/Multi-function button once.
- Next Track: Press and hold the Volume Up button for approximately 2 seconds.
- Previous Track: Press and hold the Volume Down button for approximately 2 seconds.
Call Management
- Answer/End Call: Press the Power/Multi-function button once during an incoming call or to end an active call.
- Reject Call: Press and hold the Power/Multi-function button for approximately 2 seconds during an incoming call.
Volume Control
- Increase Volume: Press the Volume Up button.
- Decrease Volume: Press the Volume Down button.
Maintenance
Cleaning
Regular cleaning helps maintain the performance and longevity of your earbuds.
- Gently wipe the earbuds and cable with a soft, dry, lint-free cloth.
- Remove ear tips and clean them with mild soap and water if necessary, ensuring they are completely dry before reattaching.
- Do not use abrasive cleaners, solvents, or harsh chemicals.
Water Resistance (IPX67)
The MZX856 earbuds are rated IPX67, meaning they are protected from dust and can withstand immersion in water up to 1 meter for 30 minutes. To maintain water resistance:
- Ensure the charging port flap is securely closed before exposure to water.
- Do not charge the earbuds if they are wet.
- Rinse with fresh water after exposure to saltwater or chlorinated water and dry thoroughly.
Storage
When not in use, store the earbuds in the provided carry pouch to protect them from dust and damage. Avoid storing in extreme temperatures.
Troubleshooting
If you encounter issues with your earbuds, refer to the following common solutions:
| Problem | Solution |
|---|---|
| Earbuds do not power on. | Ensure the earbuds are fully charged. |
| Cannot pair with device. | Ensure earbuds are in pairing mode (flashing red/blue). Turn off and on Bluetooth on your device. Move earbuds closer to your device. |
| No sound or low volume. | Check volume levels on both earbuds and connected device. Ensure earbuds are properly paired. |
| Intermittent connection. | Ensure no obstructions between earbuds and device. Move closer to the device (within 33 feet). Avoid strong Wi-Fi or other wireless interference. |
| Charging not working. | Check charging cable and power source. Ensure charging port is clean and dry. |
Specifications
| Feature | Detail |
|---|---|
| Model Name | MZX856-BLK |
| Connectivity Technology | Bluetooth |
| Wireless Range | 33 Feet (10 meters) |
| Battery Life | Up to 20 Hours |
| Water Resistance Level | IPX67 (Waterproof) |
| Audio Driver Type | Dynamic Driver (9mm Neodymium) |
| Included Components | Earbuds, 3 sets of Freebit ear tips, flat tangle-free cable, carry pouch |
| Control Type | Media Control, Touch Control (Wireless) |
| Material | Plastic |
| Item Weight | 0.67 Pounds (approx. 10.7 ounces) |
| Product Dimensions | 2.57 x 1.53 x 1.91 inches |
| UPC | 021331862518 |
Warranty Information
Altec Lansing products are designed and manufactured to the highest quality standards. This product is covered by a limited warranty from the date of original purchase against defects in materials and workmanship. Please retain your proof of purchase for warranty claims. For specific warranty terms and conditions, refer to the official Altec Lansing website or contact customer support.
Support
For further assistance, technical support, or to view frequently asked questions, please visit the official Altec Lansing website:
You may also contact Altec Lansing customer service directly for personalized support.





