The Bloom Farms Highlighter Vape is an easy to use cannabis vapor pen that comes with a pre-filled cartridge. Bloom Farms cannabis oil is extracted using Supercritical CO2 technology and is then further refined to remove plant lipids and waxes. To allow for easy vaping, a small amount of pharmaceutical grade polyethylene glycol is added. Each Highlighter cartridge and replacement cartridge comes with 400mg of oil formulated to have 40-45% THC. This will generally allow for 150-200 puffs. The Highlighter is a 280 mAH battery that operates between 3.3 V to 4.2 V and will usually last for an entire cartridge on a single charge. This easy to use pen automatically activates when air is drawn through the cartridge. Each highlighter includes a usb charger. The Bloom Farms Highlighter Vape is available in white (sativa) and black (indica) versions. Pre-filled replacement cartridges are also available. 510 threading, refillable.