Sigelei Fuchai Duo-3

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Sigelei Fuchai Duo-3

Sigelei Fuchai Duo-3 box mod enters the vaping market with impressive functionality. Also, it has a fascinating look. This new mod is the modern redesign of the Fuchai series. As for appearance, the box mod looks very stylish. Curved chassis and different bright colors for your selection. Black, Blue, Red, Silver, Gray, Gold color finishes are available. Besides, this fashionable device has a durable zink alloy construction. As well, it fits well in the hand. It is also convenient to use because of 1-inch OLED screen with full-color resolution. Large and clear it shows all the essential data about your vaping.

Featuring an advanced chipset, the Sigelei Fuchai Duo-3 fires up to 175W. It integrates dual 18650 batteries. You can easily access them via removable battery cover. The mod offers customized temperature control settings such as TCR and TFR adjustments. By the way, vapers will be pleased by user-friendly preset modes. The mod has a three-button operation. An oversized firing button is placed on the top of the mod. While the adjustment buttons are situated below the display. Such location provides more ergonomic. Besides, available firmware upgrades ensure the for future added features onto your device. All in all, Sigelei Fuchai Duo-3 box mod offers all you need for a pleasurable and safe vaping.

Sigelei Fuchai Duo-3 Box Mod Specs and Features:

  • Dual 18650 High-Amp Battery
  • Size: 85mm by 42mm by 33mm
  • Max Wattage Output: 175W
  • Voltage Output Range: 1-7.5V
  • Min Atomizer Resistance: 0.1ohm
  • Intuitive 1-Inch OLED Display
  • Full-Color Resolution
  • Compatible with Ni200, Titanium, and Stainless Steel
  • Temperature Coefficient of Resistance (TCR) Adjustments
  • Temperature Factor of Resistivity (TFR) Adjustments
  • Micro USB Charging
  • Firmware Upgradeable
  • Colors Available: Black, Blue, Red, Silver, Gray, Gold
  • User-Friendly Preset Modes
  • Large Oversized Firing button
  • Three-Button Operation
  • Removable Battery Cover – Lock Switch
  • Various Protections
  • Spring-Loaded 510 Connection
Please note that there are several critical recommendations on how to use your vaping device. Please keep safety in mind and use electronic products responsively. The information below is not guaranteed to cover all types of safety issues and is only a guide. For legal advice, you must find or contact a professional source of information confirmed by your local authorities. Be cautious when connecting your device to the electricity source. Keep your device away from extreme temperatures, high or low. Keep your vaping gear away from direct sunlight, water or any other substances that can impact safety when using electronic products. Keep your device away from contact with any kind of metals or electrical conductors such as tools, coins, keys, wire. Do not customize or add modifications to your device by yourself. Old devices and batteries may be unstable. If you notice any malfunctions, stop using a malfunctioning device immediately. We strongly recommend that you recharge replaceable batteries using external chargers. This will help to recharge batteries the right way. If USB charger is the only option to charge, use the supplied charger or a similar one produced by a licensed company. If your mod uses more than one replaceable battery, we recommend using only identical batteries meeting requirements as determined by the equipment manufacturer. Never use any kind of DIY chargers or chargers with visible damage. Never leave the device to charge unattended or overnight. Don’t charge your devices longer than the time specified in the user's manual. Don’t carry your devices and batteries separately in a pocket. Store and carry batteries in an electric-proof container and under safe conditions. Recharge batteries only on a clean and fireproof surface. If a battery looks damaged or has bad wrapping, don’t try to charge it or use it in the device. All batteries must be disposed of in accordance with your local regulations. There is always a risk when using any rechargeable batteries even if not mishandled. is providing price information and cannot be held responsible for any damage caused by products found on this website.


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Additional information


Black, Blue, Gold, Gun Metal, Red, Silver

Device Dimensions (L*W*H)

L – 42mm * W – 33mm * H – 85mm

Replaceable Battery

2x 18650

Charging Type

Micro USB

Device Features

510 Connection, Child Lock, Customizable Firing Profiles, Cutoff Timer, High Temperature Protection, Overcharge Protection, Preheat Function, Short Circuit Protection, Upgradeable Firmware, OLED Screen, Spring Loaded 510

Maximum Output Wattage


Minimum Resistance VW

0.1 ohm

Minimum Resistance TC

0.05 ohm

TC Modes

Ni, SS, TCR, Ti