Introduction
Thank you for choosing the MiOYOOW Pomodoro Cube Timer. This innovative timer is designed to enhance your productivity and time management for various activities such as studying, working, training, cooking, and baking. Its unique gravity sensor design allows for easy operation by simply flipping the cube to set desired time intervals. Please read this manual carefully to understand how to use your timer effectively.
Product Overview
The MiOYOOW Pomodoro Cube Timer features a compact and lightweight design, making it highly portable. Key features include:
- Gravity Sensor Design: Easily set and start timers by flipping the cube to the desired time face.
- 10 Preset Timer Settings: Includes 1, 2, 3, 5, 10, 15, 20, 25, 30, and 55 minutes for quick selection.
- Adjustable Volume: Three sound levels (High, Medium, Low) to suit different environments and needs.
- Two Power Options: Available in a battery-operated version (requires 2x AAA batteries) and a rechargeable version (built-in 450mAh lithium battery, charges via 5V adapter).

Image: The cube timer displaying various preset times, illustrating the 10 available countdown options.
Setup
For Battery-Operated Version:
- Locate the battery compartment on the timer.
- Insert 2 AAA batteries (not included), ensuring correct polarity (+/-).
- Close the battery compartment securely.
For Rechargeable Version:
- Before first use, fully charge the timer.
- Connect the provided data cable to the timer's charging port (USB Type-C) and to a 5V power adapter (not included), computer, or power bank.
- The indicator light will show charging status (e.g., solid red while charging, off when fully charged).

Image: Close-up view of the timer's side, highlighting the USB charging port and power button for the rechargeable model.
Operating Instructions
Starting a Timer:
- Ensure the timer is powered on.
- Select your desired time interval (e.g., 1, 2, 3, 5, 10, 15, 20, 25, 30, or 55 minutes) from the numbers printed on the cube's faces.
- Flip the cube so that the desired time interval number faces upwards. The timer will automatically start counting down, and an indicator light may flash.

Image: Illustration of the gravity induction feature, showing how flipping the timer to a numbered side starts the countdown and flipping it to a blank side stops it.
Stopping/Pausing a Timer:
To stop or pause the timer, flip the cube so that a blank side (or the side with '0' if available) faces upwards. The indicator light will stop flashing, and the countdown will cease.

Image: Visual guide demonstrating how to start the timer with a single click, rotate the cube to select numbers, and use gravity induction for operation.
Volume Adjustment
The timer offers three sound levels (High, Medium, Low) to accommodate different environments and user preferences. To adjust the volume:
- Locate the volume button on the side of the timer.
- Press the volume button repeatedly to cycle through the High, Medium, and Low sound settings.
- Choose the appropriate volume level for your activity (e.g., High for cooking/sports, Medium for studying, Low for quiet environments).

Image: Diagram indicating the volume button and explaining the suitable scenarios for High, Medium, and Low volume settings.
Maintenance
- Cleaning: Wipe the timer with a soft, dry cloth. Do not use abrasive cleaners or immerse in water.
- Storage: Store the timer in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Replacement (Battery Version): Replace batteries when the timer's performance diminishes or it fails to power on.
- Charging (Rechargeable Version): Charge the timer regularly to maintain battery health, especially if not used for extended periods.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Timer does not turn on. | Low or dead batteries (battery version) / Low or dead internal battery (rechargeable version). | Replace batteries with new ones (battery version) / Charge the timer using a 5V adapter (rechargeable version). |
| Timer does not start countdown when flipped. | Timer is not powered on / Incorrect orientation / Sensor malfunction. | Ensure the timer is powered on. Flip the cube firmly so the desired number is clearly facing up. If the issue persists, contact support. |
| No sound or low sound. | Volume set to low or mute / Speaker obstruction. | Press the volume button to cycle through sound levels. Ensure the speaker is not covered. |
Specifications
| Model Number | HM31558-2 |
| Brand | MiOYOOW |
| Material | ABS + Electronic Components |
| Color | White |
| Dimensions (L x W x H) | 7.3 cm x 4.1 cm x 4.1 cm (2.9 in x 1.6 in x 1.6 in) |
| Preset Timers | 1, 2, 3, 5, 10, 15, 20, 25, 30, 55 minutes (10 settings) |
| Volume Levels | 3 (High, Medium, Low) |
| Power Source (Battery Version) | 2 x AAA Batteries (not included) |
| Power Source (Rechargeable Version) | Built-in 450mAh Lithium Battery, 5V USB Charging |
| Package Contents | 1 x Pomodoro Cube Timer, 1 x Data Cable (for rechargeable version) |

Image: The cube timer with its dimensions clearly marked, showing its compact size.
Safety Information
- Keep out of reach of children.
- Do not disassemble or attempt to repair the device yourself.
- Avoid exposing the timer to extreme temperatures, direct sunlight, or moisture.
- Dispose of batteries responsibly according to local regulations.