1. Introduction
Thank you for choosing the MiOYOOW Pomodoro Timer Cube. This device is designed to enhance your productivity and time management for various tasks, including work, study, cooking, and exercise. This manual provides detailed instructions on how to set up, operate, and maintain your timer cube to ensure optimal performance.
2. Product Overview
Key Features:
- Gravity Sensing Design: Easily switch between preset timers by flipping the cube.
- 10 Preset Timers: Includes 1, 2, 3, 5, 10, 15, 20, 25, 30, and 55 minutes.
- Adjustable Volume: Three volume levels (High, Medium, Low) suitable for different environments.
- Portable Design: Compact and lightweight for easy carrying.
- Rechargeable Battery: Built-in 450mAh lithium battery, charged via Type-C USB.
Components:
The Pomodoro Timer Cube features a simple, intuitive design. Key components include:
- Numbered Faces: Each face displays a preset time (e.g., 1, 2, 3, 5, 10, 15, 20, 25, 30, 55 minutes).
- Power/Reset Button: Located on the top surface.
- Volume Button: Located on the side, used to cycle through volume levels.
- Type-C Charging Port: For recharging the internal battery.
- LED Indicator: Blinks when the timer is active.

Figure 2.1: MiOYOOW Pomodoro Timer Cube with dimensions (7.3cm/2.9" x 4.1cm/1.6").

Figure 2.2: Top view of the timer cube, highlighting the power button and Type-C charging port.
3. Setup
3.1 Initial Charging
Before first use, it is recommended to fully charge your Pomodoro Timer Cube.
- Locate the Type-C charging port on the side of the timer cube.
- Connect the provided data cable to the timer cube and a 5V power adapter (not included), computer USB port, or power bank.
- The LED indicator will illuminate during charging and turn off when fully charged.

Figure 3.1: Connecting the Type-C charging cable to the timer cube.
3.2 Power On/Off
The timer cube does not have a traditional power on/off switch. It enters a low-power standby mode when not actively timing. To activate or reset, simply flip it.
4. Operating Instructions
4.1 Starting a Timer
The MiOYOOW Pomodoro Timer Cube uses gravity sensing for operation. To start a timer:
- Identify the desired preset time (e.g., 25 minutes) on one of the cube's faces.
- Place the timer cube with the desired time facing upwards. The timer will automatically start counting down.
- The LED indicator will blink to show that the timer is active.

Figure 4.1: Flipping the cube to start a timer (e.g., 25 minutes facing up).
4.2 Available Preset Times
The timer cube offers 10 preset countdown durations:
- 1 minute
- 2 minutes
- 3 minutes
- 5 minutes
- 10 minutes
- 15 minutes
- 20 minutes
- 25 minutes
- 30 minutes
- 55 minutes

Figure 4.2: The 10 available preset countdown times.
4.3 Stopping or Pausing the Timer
To stop or pause an active timer:
- Flip the cube so that the blank side (or any side not displaying a time) is facing upwards.
- The timer will stop, and the LED indicator will cease blinking.
- To resume, flip the cube back to the desired time face up. The timer will continue from where it left off.
4.4 Adjusting Volume
The timer cube offers three volume levels: High, Medium, and Low.
- Locate the volume button on the side of the cube.
- Press the volume button repeatedly to cycle through the volume settings.
- The current volume level will be indicated by a sound or visual cue (if available).

Figure 4.3: Volume adjustment button and suggested uses for each level.
5. Maintenance
5.1 Cleaning
To clean your timer cube, gently wipe the surface with a soft, dry, or slightly damp cloth. Do not use abrasive cleaners, solvents, or immerse the device in water.
5.2 Battery Care
The timer cube contains a built-in rechargeable lithium battery. To prolong battery life:
- Avoid fully discharging the battery frequently.
- Charge the device regularly, even if not in constant use.
- Store the device in a cool, dry place when not in use for extended periods.
6. Troubleshooting
Timer Not Starting:
- Ensure the cube is placed on a flat, stable surface with the desired time facing directly upwards.
- Check if the battery is charged. Connect to a power source and try again.
No Sound/Low Sound:
- Press the volume button to cycle through the volume levels. Ensure it is not set to the lowest (silent) setting.
LED Indicator Not Blinking:
- This indicates the timer is not active. Ensure a time face is correctly positioned upwards.
- If the issue persists, try charging the device.
Device Unresponsive:
- Try connecting the device to a charger. A low battery can cause unresponsiveness.
- If unresponsive after charging, allow it to sit for a few minutes and try again.
7. Specifications
| Feature | Specification |
|---|---|
| Brand | MiOYOOW |
| Model Number | HM31558-2 |
| Material | ABS + Electronic Components |
| Color | White |
| Power | 3W |
| Battery | Built-in 450 mAh Lithium Battery |
| Charging | Type-C USB, 5V Adapter Charging |
| Dimensions (L x W x H) | 7.3cm x 4.1cm x 4.1cm (2.9" x 1.6" x 1.6") |
| Item Weight | 0.1 Kilograms (approx. 91g) |
| UPC | 760606683365 |
8. Warranty and Support
This product is covered by a standard manufacturer's warranty. For specific warranty details, returns, or technical support, please refer to the retailer's policy where the product was purchased or contact MiOYOOW customer service directly. Please retain your proof of purchase for any warranty claims.