G Pen Pro

Last update: July 2, 2020

The G Pen Pro by Grenco Science is a sleek, durable, and compact dry herb vaporizer. It features a ceramic oven that can hold 0.25 grams of finely ground-up material. The mouthpiece is an upgrade from the previous version. It’s now made of silicone to make the draws much easier and smoother. With three temperature settings to choose from, you have the flexibility to control your vape session.

4.2/5.0 Tested By Vapospy


Grenco Science is a company with a dedicated focus on making vaporizers functional and convenient. And that’s what the G Pen Pro is all about. It’s a great beginner vape pen for the dry herb enthusiast. Its attractive design, solid foundation, and quick heat-up time are just a few of its appealing features.

Generous size chamber

The ceramic chamber is accessible by removing the vaporizer’s mouthpiece. You’ll find a nice sized oven that heats up and holds 0.25 grams of your most delicious herb. Included in the box is a pen tool that helps you pack the herb into this chamber appropriately, giving you longer sessions without the annoyance of having to stop and refill the chamber.

Formatted with LED lights

On the front of the vape pen, you’ll see four little dots right above the “G” logo. These lights serve many useful purposes. First, all these lights blink when the pen’s charging. Once the lights stop blinking and stay solidly lit, you’ll know it’s fully charged. When you’re ready to vape, turn on the device and hold the button down for 3 seconds. The colors will change to indicate a specific temperature setting. We’ll explain that now.

Three temperature settings

You can adjust the temperature on this G Pen Pro by holding down the start button. When all four LED lights turn ‘blue’ the temperature has reached 375°F. To increase the temperature, hold down the button again and wait for the lights to turn green. The ‘green’ setting is 400°F. And finally, the hottest setting is red, which is very fitting. The temperature on ‘red’ is 428°F.

Solid battery life

Upon arrival, you simply charge the pen using the USB charger that comes along with your purchase. It only takes 2 to 3 hours to fully charge. You’ll know when the vaporizer is completely charged when all the blinking white LED lights turn solid. Also, this device automatically shuts down within 3 to 4 minutes of inactivity. Not only does this preserve the battery life, but it saves you the hassle of re-charging.

G Pen Pro Video

This helpful video will provide all the information you need to charge, clean, and enjoy your G Pen Pro.

What’s in the box?

1x G Pen Pro
1x USB Charging Cable
1x User Manual
1x Cleaning Brush
1x Pen (Packing) Tool

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