The Aspire die-casted NX75-Z mod has compact size and special design. The five button system is ultra-intuitive with one-button navigation between Temperature Control and Wattage mode. The NX75 allows you to customize your mod with just a few button clicks. No firmware or connecting to computer required. The all-new CFBP feature allows for heat ramp-up (power curve) to be fine-tuned. This customization can be made with just a few clicks of the NX mod buttons. The mod is powered by single 18650 battery and supported firmware upgradeable.