The Aspire Cleito is a top-filled design tank with a heating coil that allows the juice to flow evenly and produce the best clouds and maximized airflow in the industry. Using a Clapton style kanthal coil, this allows for flavor to be fully reached. So why a K4 Quickstart kit and not a Cleito Kit? The K4 Quick Start Cleito Tank includes a 0.27-ohm kanthal Clapton coil which has been specifically designed for the K4 battery. The K4 Battery is a standard industry threading 2000mAH with a voltage output of 3.2-4.2V. Airflow inlets allow for one of the best draws in the industry. The battery itself has great safety technology built-in; automatic cutoff protection, short circuit protection, low voltage protection, and overcharge protection…protection is good. – (1) Aspire K4 Battery– (1) Aspire Cleito – (1) Cleito 0.27 Kanthal Clapton Coil Head (Pre-installed) – (1) Replacement Cleito 0.27 Kanthal Clapton Coil Head – (1) Cleito Cuff – (1) Micro USB CableAspire K4 Quick Start Kit is the latest of the “K” series that features the K4 Battery and now the ever-popular Aspire Cleito Tank.