Sigelei Fuchai Duo-3 175W TC Box Mod is the modern redesign of the performance Fuchai series, deploying a fully upgradeable, advanced chipset with a maximum of 175W and comprehensive temperature control suite within a beautifully-crafted chassis. Measuring 85mm by 42mm by 3mm, the Fuchai Duo-3 is built with highly durable Zinc Alloy construction and a soft contour chassis that fits comfortably in-hand. The device features a centralized control face layout, integrating a large 1 Inch OLED display with full-color resolution to provide organized information in pleasing aesthetics. The adjustment buttons are located below the display for additional ergonomic, with an oversized firing mechanism located on top. A continued advancement in chipset technology by Sigelei, the Fuchai Duo-3 integrates a powerful chipset capable of firing up to 175W with customized temperature control settings such as TCR and TFR adjustments. The addition of upgradeable firmware ensures the for future added features onto the device. It is powered by dual high-amp 18650 batteries (not included), accessed via removable battery cover with a convenient lock switch. Heralding the next generation of the Fuchai collection, the Sigelei Fuchai Duo-3 175W TC Box Mod is a quintessential powerhorse device. This is not the 2 cover version.