1. Introduction
The Tzumi ON AIR Echo MIC (Model 7255ST) is a lightweight, high-quality lapel microphone designed for clear audio capture. It connects directly to auxiliary-input devices and is compatible with both smartphones and digital cameras, making it versatile for various recording needs such as podcasting and video production. This manual provides detailed instructions for setup, operation, maintenance, and troubleshooting to ensure optimal performance of your Echo MIC.
2. What's in the Box
Please verify that all items are present in your package:
- Tzumi ON AIR Echo MIC with Battery (7255ST)
- User Manual

Image: The Tzumi ON AIR Echo MIC packaging, showing the microphone, clip, and control unit.
3. Product Overview
Familiarize yourself with the components of your Tzumi ON AIR Echo MIC:

Image: The Tzumi ON AIR Echo MIC, featuring the microphone head with foam windscreen, lapel clip, and the cylindrical control unit with cable.

Image: A close-up view of the microphone's control unit, showing the 'ON AIR' branding and a red switch labeled 'Cameras Off/Smartphone'.
- Microphone Head: Captures audio. Equipped with a foam windscreen to reduce plosives and wind noise.
- Lapel Clip: Allows secure attachment of the microphone to clothing.
- Control Unit: Houses the battery and the mode switch.
- Mode Switch: Toggle between 'Cameras' (for digital cameras) and 'Smartphone' (for mobile devices).
- 3.5mm Auxiliary Connector: Connects the microphone to your recording device.
4. Setup Guide
Follow these steps to set up your Tzumi ON AIR Echo MIC:
- Install Battery: The control unit requires a battery for operation. Unscrew the two halves of the cylindrical control unit to access the battery compartment. Insert the required battery type (typically a button cell, refer to packaging for exact type) with correct polarity, then re-secure the unit.
- Attach Microphone: Use the lapel clip to securely attach the microphone to your clothing, approximately 6-8 inches from your mouth, ensuring it is facing the sound source.
- Select Mode: Locate the switch on the control unit. Slide the switch to the 'Smartphone' position if connecting to a mobile phone or tablet. Slide it to the 'Cameras' position if connecting to a digital camera or other compatible recording device.
- Connect to Device: Plug the 3.5mm auxiliary connector into the microphone input jack of your smartphone, camera, or recording device. Ensure the connection is firm.
5. Operating Instructions
Once set up, using your Echo MIC is straightforward:
- Verify Connection: Ensure the microphone is properly connected and the mode switch is set correctly for your device.
- Start Recording: Open your preferred audio or video recording application on your smartphone or camera. Initiate recording as you normally would. The Echo MIC will automatically be used as the audio input source.
- Monitor Audio (if possible): If your device or recording application allows, monitor the audio levels to ensure clear sound capture and prevent clipping.
- One-Touch Recording: The microphone supports one-touch recording functionality with compatible devices and applications. Consult your device's manual for specific details on enabling this feature.
- End Recording: Stop recording in your application. Disconnect the microphone when not in use to conserve battery life.
6. Maintenance and Care
To ensure the longevity and optimal performance of your Echo MIC, follow these maintenance guidelines:
- Cleaning: Gently wipe the microphone and control unit with a soft, dry cloth. Do not use liquid cleaners or solvents.
- Storage: Store the microphone in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery: Remove the battery if the microphone will not be used for an extended period to prevent leakage.
- Cable Care: Avoid sharp bends or kinks in the cable. Do not pull on the cable to disconnect the microphone; always grasp the plug.
- Protection: Keep the microphone away from dust, moisture, and impacts.
7. Troubleshooting
If you encounter issues with your Echo MIC, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound or low volume |
|
|
| Poor audio quality (static, muffled) |
|
|
| Microphone not recognized by device |
|
|
8. Specifications
Key technical specifications for the Tzumi ON AIR Echo MIC (Model 7255ST):
- Model Number: 7255ST
- Brand: Tzumi
- Microphone Form Factor: Lavalier
- Polar Pattern: Unidirectional
- Connectivity Technology: Auxiliary
- Connector Type: 2.5 mm Jack (Note: Typically uses a 3.5mm TRRS for smartphones and TRS for cameras, verify with product packaging for exact connector type and included adapters if any)
- Power Source: Battery Powered
- Compatible Devices: Camera, Smartphone
- Special Feature: 1-Touch Recording
- Color: Black
- Item Dimensions (L x W x H): 1 x 1 x 1 inches (approximate)
- Item Weight: 1 pound (approximate)
9. Safety Information
Please read and adhere to the following safety precautions:
- Do not expose the microphone to water or excessive moisture.
- Avoid dropping or subjecting the microphone to severe impacts.
- Do not attempt to disassemble or modify the microphone. This will void the warranty and may cause damage.
- Keep out of reach of children.
- Dispose of batteries according to local regulations.
10. Warranty and Support
For warranty information or technical support, please refer to the documentation included with your purchase or visit the official Tzumi website. You may also contact Tzumi customer service directly for assistance with product issues or inquiries.
Tzumi Store Link: Visit the Tzumi Store on Amazon





