HA-MIC04
AI Voice Recorder with WiFiβ

Table of Contentsβ
- Product Overview
- App Download
- Pairing & Connection
- Button Controls
- Operational States
- LED Indicators
- Power Management
- Modes of Operation
- WiFi Configuration
- FAQ (Frequently Asked Questions)
- Experimental Features
Product Overviewβ
The HA-MIC04 is an AI-powered voice recorder with WiFi capabilities, designed for seamless voice interaction and recording.
π¦ What's in the box?
- 1 x HA-MIC04 Device
- 1 x Type-C Charging Cable
π Technical Specifications:
Feature | Details |
---|---|
Product Name | AI Voice Recorder |
WiFi Standard | IEEE802.11 b/g/n |
Bluetooth Version | V5.3 |
Transmission Frequency | 2.4-2.48 GHz |
Transmission Distance | 10 m |
Storage Capacity | 1GB SD NAND |
Feedback | Buzzer + Vibration motor |
Charging Interface | Type-C |
Charging Voltage | 5V / 1A |
Charging Time | 0.5 hours |
Talk Time | ~70 hours |
Standby Time | ~2000 hours |
Battery Capacity | 3.7V, 650mAh |
Material | Aluminum Alloy + PCBA |
Net Weight | 36g |
Dimensions | 65 Γ 22.6 Γ 16 mm |
App Downloadβ
Download the Hearit.AI app from:
Alternatively, search for "Hearit.AI" in Google Play Store or Apple App Store.
Pairing & Connectionβ
- Launch the app and create an account or sign in.
- Select your language.
- Long-press the front button for 3 seconds to power on the device.
- Confirmation: Buzzer sound + steady blue LED.
- Enable Bluetooth on your phone and select your device in the app.
- Tap "Start Using" to enter the main interface.
Button Controlsβ
Front Button (Main Control)β
Power On/Offβ
- Long-press (3 seconds):
- Turns the device on/off.
- Feedback: Buzzer sound + steady blue LED (when powered on).
Start/Stop Recordingβ
- Single press:
- Starts or stops recording.
- Feedback: Short vibration + single beep.
- LED Status:
- Blue (low): Not recording.
- Blue (high): VAD (Voice Activity Detection) inactive.
- Purple: VAD active (recording mode with audio input).
OTA Updatesβ
- Press 5 times quickly:
- Checks for firmware updates.
- LED Status:
- Steady yellow: Checking for updates.
- Flashing yellow: Update in progress.
- Flashing red: WiFi issue or update failed.
- Flashing white: No updates available.
Factory Resetβ
- Press 3 times quickly, then hold:
- Resets the device to factory settings.
Firmware Update Modeβ
- Press 5 times quickly, then hold:
- Enters firmware update mode.
Side Button (Mode Switch)β
Switch Modesβ
- Single press: Cycles through modes:
- Translation Mode π
- Meeting Mode π
- Custom Mode π€
- Note-Taking Mode βοΈ
- Confirmation:
- Voice prompt via app + short vibration.
Operational Statesβ
Basic Controlsβ
# | Function | Precondition | Steps | Expected Result | Buzzer Feedback | LED Status |
---|---|---|---|---|---|---|
1 | Power On | Device in sleep mode | Click front/side button | Device wakes up & broadcasts BLE | None | Red/Blue alternating flashes (3x) |
2 | Power On | Device awake, BLE disconnected | Click/hold front/side button | "BLE disconnected" prompt | 2 short beeps | Red flashes every 0.5s (2x) |
3 | Sleep Mode | Device awake, BLE disconnected | Wait >5 minutes | Device enters sleep mode | None | None |
4 | Pairing Success | BLE disconnected | Paired with app | Pairing completed | None | Blue flashes every 0.8s (3x) |
5 | Start/Stop Recording | BLE connected | Click front button | Audio streams to app | 1 short beep | Blue solid (recording) |
6 | Switch Mode | BLE connected | Click side button | Mode changed via app | None | Blue flashes once |
7 | TTS Playback | BLE connected | Hold side button | App announces current mode | None | Blue flashes once |
10 | BLE Disconnect | BLE connected | Phone disconnects | Connection lost | None | Red flashes every 0.5s (3x) |
11 | Reconnect | BLE disconnected, app active | Bluetooth enabled | Auto-reconnect to phone | None | Blue flashes every 0.8s (3x) |
12 | Low Battery Alert | Device in use | Battery β€10% | Alert every 1 minute | 1 long beep | Red flashes every 0.8s (2x) |
13 | Charging | Device charging | USB-C connected | Charging activated | None | Green solid |
14 | Fully Charged | Battery 100% | USB-C connected | Charging completed | None | Green LED off |
LED Indicatorsβ
State | LED Pattern | Meaning |
---|---|---|
Power On | Red/Blue alternating flashes (3x) | Device waking up |
BLE Disconnected | Red flashes (2x, 0.5s interval) | Connection lost |
Pairing Success | Blue flashes (3x, 0.8s interval) | Pairing successful |
Recording | Blue solid / Purple (VAD active) | Recording active |
Mode Switch | Blue flash (1x) | Mode changed |
Low Battery | Red flashes (2x, 0.8s interval) | Battery β€10% |
Charging | Green solid | Charging in progress |
Full Charge | LED off | Charging complete |
OTA Update | Yellow steady/flashing | Update in progress |
Factory Reset | Red steady | Reset in progress |
Power Managementβ
Chargingβ
- Interface: USB-C port
- Status:
- Charging: Green LED solid
- Full: LED turns off
Low Battery Alertβ
- Trigger: Battery β€10%
- Reminder:
- One long beep every minute
- Red LED flashes every 0.8s, twice
Modes of Operationβ
Translation Mode πβ
- AI-powered translation with voice output
- Auto-detects spoken language
- Great for international conversations
Meeting Recorder πβ
- Record meetings with high-quality audio
- Convert speech to text with accuracy
- Get organized meeting summaries
Custom Model π€β
- Add your own AI instructions
- Choose from ready-to-use models
- Adapt to different scenarios
Note Taking Mode βοΈβ
- Speak your tasks naturally
- Auto-organize into categories
- Smart deadline detection
WiFi Configurationβ
- Visit WiFi Configuration Page.
- Enter WiFi Name and Password.
- Start configuration to connect device.

FAQ (Frequently Asked Questions)β
-
How do I switch between modes?
- Press the side button once to cycle through available modes.
-
What happens when the battery is low?
- Device will provide voice and LED alerts every minute when battery is β€10%.
-
How do I update the firmware?
- Press the front button 5 times quickly to check for updates.
-
What should I do if the device doesn't connect?
- Ensure Bluetooth is enabled on your phone.
- Try resetting the device by pressing the front button 3 times quickly, then hold.
Experimental Featuresβ
- Several experimental features are available in the web-demo version.
- Web-demo supports Windows, macOS, Android (iOS not supported).
- Access via webdemo.hearit.ai.