The Aspire Rhea X Kit is a single swappable 18650 Kit with 100W max output capabilities. The mod itself is rubber coated for protection against drop damage and the battery lid (located at the bottom) is made of solid stainless steel, with rubber finishings for security.
The 0.96" LED screen displays many things like wattage, puff count, resistance and lets you choose between 5 different vaping modes including temperature control. It is navigated via the 3 buttons in the lower quarter of the device. The fire button is used to turn the device on and off (5 quick clicks) and to fire the device (hold).
A number of safety features are in place such as 10s puff cut-off, short circuit and overheat protection. 
The Rhea X Kit comes with the Aspire Huracan tank which is a top-airflow sub-ohm masterpiece. Leakproof, easy to re-fill via twist-on lid and uses the impressive range of Aspire BP Mesh Coils.