The Clouds of Vapor Voltage Meter add-on is compatible with any 510 mod. Three digit led display shows the current voltage with accuracy of .005 Volts. Shows voltage out of the battery when atomizer is not attached and voltage under load when atomizer is attached. Update interval of 2 seconds, reads voltages between 2.8 and 25.2.

Made in	USA
Manufacturer	Clouds of Vapor
Dimensions	N/A (Tell us)
Weight	N/A (Tell us)
Material	N/A (Tell us)
Solderless/wireless	N/A (Tell us)
Button placement	No button
Supplier(s)	Clouds of Vapor
Video(s)	N/A (Tell us)

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Power Vapor box mods come in many variations. Regular and VDU version use one 14500 (3.7V) battery and the 5V version uses two 14500 batteries. VDU version has a display that shows the Voltage supplied to the atomizer and relative Voltage remaining in the battery. All of them come in many different colors. Regular version costs $25, VDU and 5V $55.

Made in	USA
Manufacturer	N/A (Tell us)
Dimensions	N/A (Tell us)
Weight	N/A (Tell us)
Material	Plastic
Solderless/wireless	N/A (Tell us)
Button placement	Side
Supplier(s)	JuiceBlaster
Video(s)	N/A (Tell us)

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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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ProVari Variable Voltage mod is the second e-cig device from ProVape. The first mod to feature a single battery buck/boost circuit offering a variable voltage range of 3.3 – 6 volts. You can change the voltage with just a few button presses, no screwdriver needed. Voltage stays the same regardless of the battery power left (regulated voltage). This model will work with a single 18490 battery (AW 1100mah high drain recommended). You can also use a regular 18500 battery but with a limited voltage range  or a 18650 battery with an extension cap. Single battery designs are much safer than stacked batteries and will out perform stacked battery devices. ProVari features: Microprocessor controlled variable voltage from 3.3V to 6V (.1 volt increments), built-in display and translucent light-up pushbutton with low battery indicator, 16 seconds safety cut-off, venting system, short circuit and reverse battery protection, thermal monitoring system, amperage limiting, battery monitor and over-discharge protection. Now available with polished chrome or texture black finish and special collector’s edition end caps. Latest limited edition finish is the beautiful 24 carat gold one (see below).

Update: ProVari Version 2 (V2) now has a voltage range from 2.9V to 6V. More importantly the amperage limit has been updated from 2.5 amps to 3.5 amps. This means that you can now use dual coil and low resistance atomizers without the protection circuitry shutting the unit down at higher voltages.

Made in	USA
Manufacturer	Provape
Dimensions	4.1″ x 0.90″
Weight	3.5 ounces
Material	Stainless steel
Solderless/wireless	No
Button placement	Side
Supplier(s)	Provape
Video(s)	N/A (Tell us)

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