Darwin is a regulated variable voltage (or wattage to be exact) mod with a built-in custom rechargeable 1800 mAh battery. The Unit is digital, continuously displaying battery charge level, volts, amps, resistance, and most importantly wattage. A “finger-wheel” is used to adjust the wattage, everything else is fully automatic. The warranty on the battery is one year, while the rest of the unit has a two year warranty. The manufacturer will replace the battery for $25. Comes with a 510 connection and a charger ofcourse. If you prefer tube shape, check out ProVari.

Made in	USA
Manufacturer	EvolVapor
Dimensions	5.5 x 1.5 x .5
Weight	4.7oz (133g)
Material	Aluminum (+brass atomizer arm)
Solderless/wireless	No
Button placement	Side
Supplier(s)	NHaler
Video(s)	peopleschamp3172

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