- External 21700/20700/18650 batteries compatible (not included)
- XL Size Cartridge, top filling design
- XP coils for smoother flavor
- E-juice detection technology, to prevent from getting dry burn
- Short-circuit protection
- Over heat protection
- Over current protection
- Weak battery protection
- Reverse battery protection
- 8s cut-off protection
- Low voltage protection
- Battery over-charge protection
