Wismec Reuleaux RX300 is designed by Jaybo, it is powered by four replaceable 18650 cells, the maximum output can reach 300W, providing you with a huge amount of vapor. The user-friendly interface with 0.96inch OLED screen presents all parameters clearly. And the battery status can be vividly displayed through the four separate bars. The unique design of battery cover enables you to replace the cells with great ease. Dual circuit protection and Reverse polarity protection make the RX300 much safe and reliable. And with an upgradeable firmware, custom logo and preheat function are available. Another new design is the mod can reverse charging adapter serves as a power bank, providing power to electronic equipment when necessary.