The Innokin Kroma Vape System 75Watts of Temperature Control Power in an Ultra-Compact 72mm design, fitted for maximum grip. The Innokin Kroma Vape System is powered by the smooth precision of 75Watt Aethon Temperature Control Chipset (SS316L, Ni200, Titanium) with dry hit prevention. Durable inset Stainless Steel 510 threading reduces the height even further when using the Innokin SlipStream 2ml tank and the included adapter allows the use of all 510 atomizers. The high quality bright OLED clearly displays all important information and the power and adjustment buttons raise or lower temperature or watts in .5 increments. The Kroma is extremely compact, fast and powerful with an internal 2000mah battery with 2Amp MicroUSB Quick charge and Vape while charging technology. Technical detail for Innokin Kroma Vape: Battery: 2000mAh Maximum output Wattage: 75W Maximum output Current: 35.5A Maximum working Current: 27.5A Maximum output Voltage: 7.5V Atomizer Resistance: 0.1?? (Minimum) Temperature Control Mode: Ni (0.1-0.2 ??), Ti (0.1-0.5 ??),?Stainless Steel 316L (0.2-1.0 ??) coils are recommended. Important: Temperature Control is only available with T.C. compatible coils.