First press 73-119u, stabilized in an oxygen free environment to maximize terpene preservation. Bringing you the best in a versatile 510 threaded format. VAPE INSTRUCTIONS: Tap the bottom of the pen with your finger to cycle through functions: Tap 5x to cycle on / off. Tap 4x to activate dab-like preheat cycle. Tap 3x to switch from low (one flash) to high (two flashes) heat settings.