The RX200S, a new version of Reuleaux series, designed by JayBo, still features the use of three removable 18650 batteries and reverse polarity protection. However, the new and powerful chip has a maximum output of 200 watts and advanced temperature control functions including Titanium, Nickel and Stainless Steel modes as well as Variable Wattage Mode. Featuring Upgradable Firmware Makes the RX200S Cutting Edge in todays Market! What makes the RX200S Different from the Original Rx200 is the new and Improved, Large 0.96in OLED Display With Vibrant Number and Lettering to make the Display Easy to Read and Use! For an all around great 3-Battery Box Mod with a High Wattage output and a Variation of Modes and Features then the RX200S is Perfect for you!