Depending on the coil you choose, you can vape as low as 15W or as high as 110W with the NRG-S and its compatible coils. Vaping at higher power is improved with the NRG-S Tank’s insulation layer between the tank and mouthpiece, helping keep your drip tip cooler than previous Vaporesso tanks. The NRG-S has an upgraded swiveling top fill cap, helping to keep the lid closed even when you’re on the go. Just twist and push the cap back to expose the fill port. You can also adjust the dual slotted airflow control in the base of your NRG-S tank to tighten or loosen the airflow through your tank.