Features of Vaporesso Switcher: -Material: Zinc alloy -Size: 89*53*31mm -0.96inch OLED screen -OMNI 2.6 board chipset -Output wattage: 5-220W -Battery: 2pcs 18650(sold separately) -Reistance range: 0.05-5.0ohm -Temp control range: 100-315C -Revolutionary case replaceable design -Masculine big-510 interface -Quick charge system -USB input protection -Equalizing charge system -Firmware upgradeable Features of NRG Mini tank: -Material: Stainless steel + pyrex glass -Size: 56*26.5mm -Capacity: 2.0ml -Slide-n-fill design -Bottom airflow adjustable design -Bottom heat insulation layer design -Unique mesh drip tip to prevent spit back -GT8 0.15ohm 40-80W, best 55-70W -GT4 0.15ohm 30-50W, best 30-45W -GT2 0.4ohm 40-60W, best 45-55W -GT6 0.2ohm 30-75W, best 60-70W -GT CCELL Ceramic 0.5ohm, 5-25W What's included in the Package: 1 x Vaporesso Switcher mod 1 x NRG tank mini 1 x GT8 core (pre-installed) 1 x GT4 1 x USB cable 1 x Extra glass tank 1 x User manual