G Pen Pro Vaporizer

Grenco Science

G Pen Pro Vaporizer
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G Pen Pro Features:

  • Newest Edition
  • New Larger Ceramic Heating Chamber
  • Quick Heat Up Time
  • 1 Year Warranty (with manufacturer)
  • Three Temperature Control Settings
  • New LED Color Coded Light Display
  • Ergonomic Grip for Comfortable Holding

Grenco Science, the manufacturer of remarkable and ultramodern vaping pens, have released another successful product into the vaping market. The engineering giants keep producing more revolutionary products that are user-friendly. They meet the constant demands of their highly esteemed customers all over the world. The G Pen Pro Vaporizer was specifically designed to use together with dried herbs. This vaporizer is packed with stylish features that make this the crème de la crème.

Ease of Use

The G Pen Pro is quite easy to use. The manufacturers have ensured that they do everything within their capabilities to reduce the burden of confusion associated with unboxing new products. You can easily power up the G Pen Pro or turn it off. You can regulate the temperature just as easy. This portable herbal pen turns on on manually. It has an automatic shut off system that powers it off after 4-5 minutes. LED lights located on the side of the vaporizer tell you the temperature you have selected.


The G Pen Pro vaporizer has a distinctive discreet design. This vaping pen comes in a black color which is not conspicuous, unlike many other vaporizers that are usually eye-catching. Take the temperature to the lowest and take quick draws whenever you are in a public place. You can place it on your desk and it won't look obvious.


The G Pen Pro from Grenco Science is a portable dry herb vaporizer. It boasts a sleeker and stronger version vapes that are compact built. The G Pen herbal vaporizer has color-coded LED display. The large ceramic heating chamber gives vapers the ultimate vaping experience. This makes sure you don't need to load it often.

Build Quality

The G Pen Pro dry herb vaporizer comes in a black cylindrical tube resembling a cologne.  This cylindrical tube contains the G Pen Pro and accessories which come with it.

The Pro dry herb vaporizer is very sleek, portable and sturdy. The pen’s dimensions are 116mm by 25mm by 24mm which makes it very handy to take along with you anywhere. The exterior part of it is made up of aluminum which makes it unbreakable. It's mouthpiece is made of silicon to prevent it from destruction and also to permit ease of cleaning.

The interior chamber comes from ceramic material which acts as an oven that can take about 0.25g of herbs. There is a stainless steel covering between the mouthpiece and ceramic oven. It prevents dried products from entering your mouth during a vaping session. The set of LED lights also show the percentage of charge on the gadget. The mouthpiece made of silicon is above the ceramic atomizer where the herbs are packed. The battery is placed below the ceramic chamber and other parts of the pen. The base of the device has a port where you can plug the USB charger.

Another unique feature of the G Pen Pro is its convection heating technology. This feature is quite rare on compact built vaporizers. Users can enjoy flavorful taste of their favorite herbs as the G Pen sends the hot air to the chamber to vaporize the materials. The chamber also assures users of safe vaping because it has low conductivity. This means it won’t get too hot or burn your herbs.

Vapor Quality

The G Pen’s Pro vaporizer gives an average vapor quality. The device heats up pretty fast even when the temperature setting is at its lowest. The vapor quality and taste do not have any unique quality compared to that of other brands. When using the vaporizer for the first time, it is imperative to allow it run through about two heat cycles before you load your material into it. This will burn off any of the manufacturers oil, if any.

The draw resistance is great. The airflow passage is built below the mouthpiece. If the chamber is loaded to the brim, the draw resistance becomes very poor. Try to pack about 30% of the herbal chamber capacity.

Battery Life

It takes an average of 2-3 hours for the battery of the G Pen Pro to charge. The 2200mAh, 7.77Wh lithium-ion battery has a warranty of 1 year. The set of LED lights located at the side of the device show the battery life. If all four LED lights are on, it signifies a full battery. If only two LED lights are on, it means that the battery is low. To charge, the device should be plugged into a source of electricity.

The mini USB cord connects to a PC to charge or plugged into an adapter connected to a wall socket. A turquoise colored light indicates the device is charging. G Pen pro’s battery life is relatively good. It can withstand about 8 sessions at an average of 2 minutes per session. An average session consists of approximately 10 draws. It can last an average of 36 hours after undergoing these sessions.


How to use the G Pen Pro

Loading the Pen

If you want to load the G Pen Pro dry herb vaporizer with dried herbs, pop off the mouthpiece. Put in your semi-powdery dried herb into the oven chamber. Give the vaporizer a light shake so that the material can settle in properly. Avoid overloading the oven chamber to prevent restriction of airflow.

Turning On and Using the Vape

To power the pen on, press the button five times in a quick succession. The G Pen Pro’s default temperature is Blue. If you wish to regulate it to a higher temperature, you can either change it to Green (400°F) or Red (428°F). Press the button until the temperature regulates to your preferred temperature. The LED lights signify the temperature settings you have selected. If it stops blinking at intervals, it means the oven chamber is already heating up to your required temperature setting. When the LED light becomes stable, it means the G Pen pro device has been pre-heated, and you can go ahead to take draws.

Temperature settings

The temperature setting which signifies Green (400°F) produces the best vapor with top-notch quality. It takes approximately 30 seconds for the G Pro pen to attain this particular temperature setting. You have to take at least three draws before the dried herbs in the oven chamber become hot enough to produce vapor clouds.

  • Low (Blue) 375°F
  • Medium (Green) 400°F
  • High (Red) 428°F

Cleaning and Maintenance

If you love a very clean pen, you will enjoy the G Pen Pro dry herb vaporizer. This vaporizer is very easy to clean. It is important that you clean your vaping pen every day to avoid clogging of the mouthpiece. This will allow you to have amazing sessions. The cleaning brush does the job of cleaning effectively. Open the mouthpiece at the top of the pen and start cleaning. Put the cleaning brush into the chamber and clean gently. Ensure that every leftover herb is wiped away.



  • Portable and can fit easily into bags or pockets.
  • One button controls all activities
  • Automatic turn-off system.
  • Ease of cleaning and maintenance
  • Fast heating which remains consistent.


  • No digital screen display.

G Pen Pro Vaporizer Includes:

  • 1 x G Pen Pro Vaporizer
  • 1 x Rubberized Mouthpiece
  • 1 x G Pen Pro Packing Tool
  • 1 x Cleaning Brush
  • 1 x USB charger
  • 1 x G Card Grinder
  • 1 x User Manual

The new G Pen Pro Vaporizer is the coolest new dry herb vape released by Grenco Science. Because it is so new, there is not a tremendous amount of feedback yet, but what we are hearing all seems pretty good. First and most importantly we like it because it looks cool and performs well compared to other similar units. You are getting very good efficiency and effectiveness for the affordable price range.

The best feedback we get for the new G Pen Pro Vaporizer comes from people that are looking for something affordable, very discrete and easy to use. It offers good flavor for a unit this size and allows you pretty good control with three (3) temperature settings, which gives you very good control.

So what is it that you are looking for? Do you know which kind of vape would be best for you and your lifestyle? Below we will cover some of the most important questions we get about the G Pen Pro Vape and answer those questions so you are confident if you decide to purchase it.

  • Vapor Quality: You will get good – very good quality vapor, which include how thick the cloud is and also the flavor. Most units this small offer very small clouds and will start to taste burnt pretty quickly. The G Pen Vaporizer grades very well against competitors.
  • Portability & Discreteness: The G Pen Pro is small and compact with dimensions of 4.5in. x 1in. x 1in. . This makes it very easy to take anywhere and enjoy very discretely. You are getting one of the best portable and most discrete dry herb vaporizers with this level of quality from construction to performance.
  • Ease of Use & Maintenance: This thing is very easy to use, clean and maintain. People really like how easy it is to take out anywhere you want to go and also how easy it is to use. Cleaning it is also very easy and fast.
  • Oven Capacity & Efficiency: The oven is ceramic and holds about 0.25 G of herbs. We recommend grinding your herbs up very fine for the he strongest effect. Most units around this size are for personal use. This unit is perfect for a single person and also works but still allows you to share and still not ruin your experience.
  • Temperature Settings & Controls: The 3 temperature settings include: (375°F) BLUE, (400°F) GREEN and (428°F) RED. Our team likes the overall control because it allows you to start slow and increase the heat throughout your session if you choose, or you can start on medium and turn it up for a faster session. People seem very happy with the overall temperature flexibility and how easy the controls are set up.
  • Battery Quality: The battery featured in the G Pen pro is a 1300mAH rechargeable Li-Ion battery. Compared to other similar units it is pretty good and will offer about 40 minutes of continuous use on medium to high temperatures. Obviously this will fluctuate depending on how you use it. It should charge fully in about 2 hours up to 2.5 hours.
  • Construction Quality: Grenco Science is known for making very good quality units and the G Pen Pro is no different. This is not one of those cheap things you see at the gas station or smoke shop. For under $100 you are getting a very high quality unit. The aluminum exterior is durable, so it slides easily into a pocket, bag, or carrying case and you can expect that it won’t break easily. The silicone mouthpiece is sturdy and is easily removed for quick, simple cleaning. The ceramic internal chamber holds about 0.25 grams of ground-up dry herb.
  • Warranty: All electric components are covered by the warranty for 1 year after purchase.

Why Choose the G Pen Pro Vaporizer?

The G Pen Pro Vaporizer gives an average, satisfactory effect. The long lasting battery, ease of use, and discreet design make it a product you would want to purchase. The price is also pocket-friendly for the qualities it possesses. This product is recommendable to beginners who are trying to get the hang of using vaporizers.


G Pen Pro Review - An Upgrade with Quality Vapor

The G Pen Pro is the latest offering from Grenco Science, the minds who brought you the original G Pen Herbal. This particular vape is what is known as a session vape. This means the device reaches the ideal vaping temperature and remains there until it is turned off. This particular category of vapes is great for those likely to use their vapes in a group setting. Those who are more likely to indulge in individual hits may find this particular piece of equipment does not serve their needs. Interested in a low price pen vape that can handle a group session? The G Vape may be just what you're looking for.

Design and Function

This herbal G Vape is slim and discrete, with a rugged build and an attractive exterior. It has a rapid heat time, making it more useful than the models that came before it. Unfortunately the G Vape Pro leaves much to be desired in the way of upgrades and improvements. Many of the components are plastic, making for an unsafe and (eventually) unpleasant vaping experience. I found that the vape quality produced was out a reasonable quality, but the taste left much to be desired. The first draw off the freshly-filled vape had the fresh taste I desired, but the quality quickly went downhill. The plastic mouthpiece heated up very quickly, manning the whole experience fairly unpleasant. I found it necessary to allow the unit to fully cool in between sessions in order to maintain peak value quality.


The G Pen Pro suffers from several unfortunate utility flaws, the most notable being the short battery life. Ease is one of the main selling points of a dry here vape, but the constant charging required for the G Pen Dry Herb Vaporizer will quickly make your question your purchase. The device is charged via micro USB. This highly portable cable will come in handy if you intend to use this piece as your daily driver, as it will require multiple charges throughout the day. The G Vape has a fairly standard charge time at three hours. Unlike many similar devices, the LED indicator light turns a specific color when charging in order to indicate completion.

How to Use the G Pen Pro

The G Pen Pro is easy to fill. Before you start, make sure your herb is ground smooth. Avoid grinding your herb down to a fine powder, as it will burn too quickly.  Remove the plastic mouthpiece, taking care not to lose the flexible washer beneath. Pour your herb into the chamber and tamp down lightly. Avoid tightly packing the herb, as it will burn poorly. Return the flexible washer to the mouthpiece and secure them to the vape as one piece.

The G Vape pretty standard as far as vapes go. The device has three temperature settings, these are indicated by the LED lights viable at the base. Blue indicates a temperature of 375°. A green light indicates a temperature of 400°. A red light indicates a temperature of 428°. I achieved the smoothest, best tasting vapor at a temperature of 400°.

Using the G Pen Herbal is simple and intuitive. Select your ideal temperature and hold the leaf button until the LEDs begin to change color. Toggle through the temperature options until the LED indicate the desired temperature setting. When the LEDs begin to pulse, the G Pen Pro herb chamber has initiated preheating to the desired temperature. When the LEDs stop blinking, the unit is ready for you to begin taking draws from the mouth piece. Always check the temperature of the mouthpiece before putting the device to your lips.

Cleaning is fairly easy with this particular vape, but maintenance is a nightmare. The included brush does an excellent job removing burnt particulate matter from the screen. Unfortunately, this had to be done repeatedly. I also found that the herb material required stirring on a regular basis. Taking breaks to stir in between two minute smoke sessions is neither discrete nor enjoyable.

What's in the Box?

The G Pen Pro comes in a small, disposable box which is not designed for extended storage. In the box, you will find:

  • 1 x G Pen Pro vaporizer
  • 1 x USB/Mini-USB charging cord
  • 1 x Cleaning brush
  • 1 x G Pro tool
  • 1 x Instruction manual

Overall Experience

The G Pen Pro is a moderately improved version of a substandard vape. Is it functional? Certainly. The G Pen hits all the specifications you'd expect from a vaporizer at this price point. Unfortunately, it does very little else. The cheap plastic components prevent this piece from delivering consistently excellent vapor. Conduction heating and a stainless steel chamber create a very high maintenance piece which must be thoroughly cleaned at least once per every two minute session. On-the-go indulgers seeking an easy, discreet vape will find better options at this price point.