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G Pen Pro Vaporizer

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G Pen Pro Herbal Vaporizer

Now Grenco Science has hit us with their latest offering, the new G Pen Pro vaporizer, which takes all the features of the original that we loved so much and improves on each and every one of them to bring smokers a portable dried product vape that will blow the competition away. Not only is it a pocket powerhouse that will do a great job of vaporizing your dried productss, but it is also so subtle that most people won't even notice you using it, and on top of all that the awesome price means it doesn't break the bank.

Grenco has released the G Pen Pro, based on the older G Pro model but completely refurbished and improved. Each of its components has been redesigned to ensure the best performing portable dry herb vaporizer available today! The main improvement is the oven; now the device comes with a ceramic chamber, which raises the quality of the vapor and enhances the flavor of every session.

Technical Information

Material Dry Herbs
Oven capacity 0.25 grams
Temperature Levels 190ºC to 220ºC (3 configured levels)
Heat Up Time 20 seconds
Heating System Convection
Oven Material Ceramic
Air Flow Material Stainless steel
Mouthpiece Material Silicone and plastic
Outside Material Stainless steel
Battery Capacity 40 minutes approx
Charging Time 3 hours
Charger Type Micro USB
Smartphone app N/a
Functions LED lights that display temperature settings
Approximate Dimensions 11,6 x 2,5x 2,4 cm. 
Weight 80 Grams
Warranty  1-Year warranty on electronic components 

Design and Components

The new G Pen Pro features a body made of aluminum finished with a soft-touch matte coating which not only means that it feels great in the hand but it can also stand up to the knocks and bumps associated with daily use. To give users the best possible vaping experience the G Pen Pro has a fully ceramic oven for your dried products and is also fitted with a ceramic heating element to keep your flavor clean and pure, just the way you want it.

The mouthpiece is made of plastic and has a soft silicone cover which makes it super comfortable on your lips when taking a draw. They have also kept the oven a good size and actually made it slightly larger so that you can pack plenty of dried products in there. It measures 8.6 mm across and just over 16mm deep so you can easily fit around a  quarter of a gram of material in there for each session.

G Pen Pro Temperature Settings

To give you the best vaping experience there are three temperature setting to choose from. For easy vaping, the device has an LED screen that can show you which heat setting you are currently on:

  • 190ºC - blue
  • 205ºC - green
  • 220ºC - red

The lowest is 375 degrees fahrenheit (blue) the middle is 400 degrees fahrenheit (green) and the highest is 428 degrees fahrenheit (red). These different settings mean you can tailor your flavor and vapor levels to exactly how you like it. The clever technology inside the GPen Pro also allows it to heat up from cold in as little as 20 seconds so you won't be left waiting for you hit while it gets ready.

G Pen Pro Battery

The lithium-ion battery has a capacity of 1300mAh so you won't find you are left with a dead battery after just one or two sessions and charging is taken care of via a micro USB charging lead which means you can pretty much plug in anywhere for a boost these days. Once turned on, the oven will immediately begin to heat up and then once there it will automatically power off after 4 minutes to conserve battery life.

Included with the Vaporizer

1 G Pen Pro
1 USB charging cable
1 handling tool
1 cleaning tool

Pros and Cons


  • One of the least expensive portable convection vaporizer on the market.
  • LED light system makes the G Pro easy to use and accessible to anyone.
  • Quick heat up time - for when you need a vape and you need it now.
  • Multiple temperature settings allow for a more customized vaping experience.


  • The stainless steel heating chamber may not be what every vaper is looking for, with some preferring ceramic.
  • There is a short vape path - From heating chamber to mouthpiece.

How to use the G Pro Vaporizer

Charging the G Pro Vaporizer is a very simple process, all you have to do is connect via Micro USB cable (which is provided with all units sold) and charge the vaporizer for 3 hours. When fully charged and ready to pack the chamber remove the mouthpiece (Grab mouthpiece from either side and pull upwards).

Load the chamber with your dry products, the G Pro is specifically good for using dried products. It's important to fully pack the chamber for best results and the best vapor. To turn on the G Pro, press the power button 5 times, to switch it back off, press the power button another five times. You can then select your desired temperature.

Once temperature has been decided, the power button must be held down for one second in order for the Vaporizer to start heating. The unit will begin to heat and you can track the temperature using the LED display, once the desired temperature is reached, it's time to begin your session.

Customer Reviews
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Filter Reviews:
United States United States
I recommend this product

Didn't know what to expect

This has been a very interesting experience, as I didn't know a dry herb vaporizer existed. I'm new to all this, and not a spring chicken, if ya know what I mean... This has an easy draw, heats fast, does the trick. I do wish there were more videos that show how to load it properly, as in amounts, as I don't want to overload the unit (if that's even possible?) and would like to get the most from usage, not just burn through excess product if I should shut it off between hits, or exactly how to use it, not just how to turn it on and make it work (if that makes any sense to other new users). Love it otherwise!

Theresa B.
United States United States
I recommend this product

New to the vape

This was easy to use and does as expected. It takes getting use to, because its a more mild drag than smoking a doobie.

G Pen Pro Vaporizer

G Pen Pro Vaporizer