G Pen Pro | Very Portable Dry Herb Vape Pen | Herbalize Store G Pen Pro | Very Portable Dry Herb Vape Pen

G Pen Pro

4.3 star rating 4 Reviews

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Type: Portable

G Pen Pro Vaporizer, the powerful dry herb Vape Pen

The G Pen Pro from Grenco Science in California is a lightweight, discreet, easy to use vaporizer pen for a great price. It is a reliable, basic unit that provides a clean, flavorful vapor. There is minimal resistance in this unit, making it very easy to draw vapor. The mouthpiece uses click-lock to secure it in place.  It is designed for herbal use only and is not recommended for use with waxes or oils. The G Pen Pro and Grenco’s other models are commonly counterfeited. Look for genuine products to avoid difficulties.


  • For Dry Herb
  • The Most recent device from Grenco
  • New and better - G Pro
  • Ceramic heating chamber
  • 3 Preset Temperatures
  • Very Light and Portable
  • USB Charging
Grenco G Pen Pro Vaporizer

This no-frills G Pen Pro vaporizer pen heats up very quickly, taking between 20 and 30 seconds to heat enough to draw vapor. It has one-button operation – click 5 times to turn the unit either off or on and then click again to change the temperature between one of three presets. Its small, lightweight design makes it easy to carry on the go and discreet to use outside of the home. The G Pen Pro is a little larger than a small cigar and does not produce clouds of smoke. This is easy to use, single button operated, vaporizer at a very attractive price. The silicone mouthpiece is secure and locks in place but it is also easy to remove to access the ceramic heating chamber. There are not a lot of frills or accessories with this unit, which keeps the price reasonable and use basic. It is a good unit for a beginner or even for a regular user. The product is shipped in a cylindrical container with pockets for storing the accessories.

Grenco G Pen Pro Vaporizer heat chamber

Size & Portability

The G Pen stands at just 5” in length and this small and sleek style allows for a comfortable transportable device. The device hasn’t got many parts and so this makes for an easier time in operating the machine.


You should always make sure to clean and look after your G Pen on a regular basis. The screw heads should be cleaned regularly with clear alcohol solution in order to maintain their upkeep. After cleaning always allow the pen to dry thoroughly.

What the manufacturer says about it

The manufacturer’s website is a little thin on information about their products. They do provide technical information for their products. They do sell and ship directly and a user can purchase extra mouthpieces and grinding cards for use with the G Pen Pro.

Grenco Science bills itself as a leader in the industry who engineers the most advanced, portable, user-friendly vaporizers on the market. That is what the G Pen Pro is, user-friendly and portable. While other vaporizer pens may have an additional function, LED screens and extra features, the G Pen Pro is reliable, functional and does what it sets out to do, simply and efficiently.

Grenco G Pen Pro Vaporizer heat settings

What users are saying

Users say that this is a functional vaporizer for beginners but may not be suitable for daily users or heavy users, given its lower draw than comparable units. They appreciate the low price when compared with other units of similar quality and features. Users like the ease of use of the G Pen Pro with its one-click operation, and its extended battery life, achieving 30 to 60 minutes of battery life depending on how they draw.

Users also appreciated the minimal resistance of the unit, allowing for smooth, easy drawing of vapor. Users say that, for its price, this unit will provide a clean, flavourful draw. Almost all reviewers noted that it’s small, discreet design as a real positive for those who want to use it on the go. Users also point out that the herb used should be well ground and well packed to avoid clogging. The unit is easy to clean but should be cleaned regularly to prevent resin build up in the chamber. Some users have indicated that the chamber is a little more difficult to clean than the mouthpiece but cleaning it more often will make the task much easier.

Grenco G Pen Pro Vaporizer Charging

Battery life and Charging

The battery charges from empty to full in 3 hours and is not replaceable. Users can expect a 30 to 60-minute battery life, depending on use. The battery is charged with a charging cable provided with the product.

Average battery life 30 - 60 Minutes
Recharge time 180 Minutes

In the box?

  • One G Pen Pro vaporizer
  • One cleaning brush
  • One charging cable
  • One mixing tool
  • One user manual
Grenco G Pen Pro Vaporizer included in the box

Technical Specifications

Size (length, width, height in centimeters) 11.6 x 2.5 x 2.4 cm
Weight (in grams) 181 g
Temperature range (in Celsius) 190- 230 °C
Temperature presets 3
Temperature settings Preset only
Heat power source Battery
Heating element type/material Conduction, Stainless steel
Chamber/oven material Silicone
Heat up time (in seconds) 30 seconds
Automatic shut off Yes
Types of material usable inside Herb
Dry herb capacity (in grams) 0.25 g
Extract attachment No
Control / setting interface Single-button unit
Delivery method Direct pull
Body material Plastic
Mouthpiece material Silicone
Manufacturer Grenco Science
Made in China
Designed in United States
Release date April 2018
Warranty One year
Power 110V

This trusted information is sourced from the manufacturer and our own experience testing the product.

**For legal use only