If you are looking for a mouth-to-lung vaping kit with simple power adjustment, try this EZ WATT Vape Kit from one of the world top vape device manufacturers. It is Easy to operate and Great to Vape.
 
The Innokin EZ WATT is a great choice of starter kit for beginners to vaping, or as a step up from a vape pen.
 
It is easy for anyone to vape great! Simply hold down the select and power button to cycle through 3 optimized wattage levels and press the Select button to choose from Low or High. The bright three color LED clearly indicates the current wattage level (13 - 14 (lower option) / 15 - 18 (middle option) / 30 - 35 (Higher option)). The battery in this has a 1500mAh capacity. This is not very big, but it is not bad for a unit that is this small.  
 
PACKAGE CONTAINS:
1x EZ.WATT Mod
1x Prism T20S Tank (0.8ohm)
1x Spare Prism S Coil (1.5 ohm)
1x Spare Drip Tip
1x Quick Start Guide
1x Micro USB Charging Cable
1x User Packet