Introduction
Thank you for choosing the Yocan DUBB. This device is a versatile 2-in-1 dual cartridge battery designed for discreet and efficient use. It features a 750mAh battery, adjustable voltage, and a clear TFT display. This manual provides essential information for safe and optimal operation of your Yocan DUBB device.

Image: The Yocan DUBB device shown in various available colors.
Package Contents
Please verify that all items are present in your package:
- 1 x Yocan DUBB Device
- 1 x USB Type-C Charging Cable
- 1 x User Manual (Foreign Language)

Image: Contents of the Yocan DUBB package, including the device, charging cable, and manual.
Product Overview
Familiarize yourself with the components of your Yocan DUBB device:

Image: Labeled diagram of the Yocan DUBB device components.
- Mouthpiece: Where vapor is inhaled.
- Power Button: Used for turning the device on/off and manual activation.
- Color TFT Display: Shows voltage, puff count, battery level, and cartridge status.
- Bottom Button: Used for navigation and adjustments.
- 750mAh Battery: Internal rechargeable battery.
- Type-C Charging Port: For charging the device.
- Base: The bottom part of the device.
Setup
Initial Charging
Before first use, fully charge the device using the provided USB Type-C cable. Connect the cable to the device's charging port and a standard 5V/1A USB power source. Avoid using high-output USB adapters, as this may damage the device. The charging time is approximately 1 hour.
Inserting Cartridges
The Yocan DUBB supports two 510-thread cartridges simultaneously, up to 2.0ml in size. The cartridges are secured via a strong magnetic connection within the device's body for a stealth design.
- Ensure the device is powered off.
- Gently insert your 510-thread cartridges into the designated slots. The magnetic connection will hold them in place.
- You can use two cartridges of the same flavor or different flavors to mix and match.

Image: The Yocan DUBB with two 510 cartridges inserted, demonstrating its dual cartridge capability.
Operating Instructions
Power On/Off
Press the Power Button 5 times rapidly to turn the device ON or OFF.
Voltage Adjustment
The Yocan DUBB allows for precise voltage adjustment from 1.8V to 4.2V in 0.1V increments. Use the Bottom Button to cycle through voltage settings on the TFT display to find your preferred vaping experience.
Preheat Function
The device features a 10-second preheat function at 1.8V. This helps to warm up thicker liquids for smoother vaporization. Activate the preheat function by pressing the Power Button 2 times rapidly.
Inhalation Modes
The Yocan DUBB offers two convenient inhalation modes:
- Auto-Draw Activated: Simply inhale from the mouthpiece to activate heating.
- Button-Activated: Press and hold the Power Button while inhaling for consistent vapor production.

Image: Demonstration of the auto-draw and button-activated modes, along with the magnetic connection for cartridges.
Color TFT Display
The 1.26-inch color TFT display provides real-time information at a glance, including:
- Current Voltage Setting
- Puff Counter
- Battery Remaining Percentage
- Cartridge Status
- Preheat Status

Image: Close-up of the Yocan DUBB's color TFT display and its 750mAh battery.
Maintenance
To ensure the longevity and optimal performance of your Yocan DUBB, follow these maintenance guidelines:
- Cleaning: Regularly wipe the device with a dry, soft cloth. Ensure the cartridge connection points are clean and free of residue. Do not use harsh chemicals or abrasive materials.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures. Keep it out of reach of children and pets.
- Charging: Always use the provided USB Type-C cable and a compatible 5V/1A power adapter. Avoid overcharging or completely draining the battery.
- Automatic Shutdown: The device will automatically shut down after 1 hour of inactivity to conserve battery and prevent accidental activation.
Troubleshooting
If you encounter issues with your Yocan DUBB, please refer to the following common solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Device not turning on | Low battery; Device is off | Charge the device fully; Press power button 5 times rapidly to turn on. |
| No vapor production | Cartridge not properly inserted; Low liquid level; Clogged cartridge; Low battery | Ensure cartridges are fully seated; Refill/replace cartridge; Clean cartridge; Charge device. |
| Poor vapor quality | Incorrect voltage setting; Low liquid; Old cartridge | Adjust voltage; Refill/replace cartridge; Replace cartridge. |
| Device not charging | Faulty cable/adapter; Dirty charging port | Try a different USB-C cable/adapter; Clean the charging port gently. |
Specifications
Detailed technical specifications for the Yocan DUBB device:

Image: A table displaying the Yocan DUBB's technical specifications.
| Size | Approx. 51.77 x 25 x 102 mm |
| Weight | Approx. 205g |
| Battery Capacity | 750mAh |
| Voltage Range | 1.8V - 4.2V (0.1V increments) |
| Preheat Function | 1.8V for 10 seconds |
| Coil Resistance Support | >0.8Ω recommended |
| Charging Type | USB Type-C (5V/1A) |
| Charging Time | Approx. 1 hour |
| Display | 1.26-inch Color TFT |
| Cartridge Compatibility | 510 thread, up to 2.0ml, ∅ ≤14mm, Height ≤63mm |
| Safety Cut-off | 15 Seconds |
Warranty and Support
Your Yocan DUBB device purchased from an authorized dealer, such as "Natural Gift", comes with a 30-day product warranty. This includes a 30-day exchange or refund policy for initial defects. If you experience any initial defects, such as the device not powering on, within 30 days of purchase, please contact the store directly for assistance.
Note: This warranty does not cover issues arising from customer misuse or accidental damage.

Image: Warranty information indicating a 30-day product and money-back guarantee.