The Pulsar 510 DL Scribe Vape Pen Battery is a discreet vaporizer. Designed to resemble a traditional writing pen. Key Features: Powerful 500mAh Battery Variable Voltage Settings: Adjustable voltage range from 1.8V to 3.8V. Disguised Design: Cleverly mimics a standard writing pen, providing discretion for users in various settings. Functional Ink Refill: Equipped with a refillable ink cartridge, enhancing its practicality as both a vape pen and a writing instrument. Concealed Cartridge: The hidden cartridge design maintains the pen's discreetness. Single-Button Operation: Simplifies usage with an easy-to-use single-button control system. Compact Size Universal 510 Threading: Compatible with a wide range of cartridges Maximum Cartridge Size: Accommodates cartridges up to 12mm in diameter and 62mm in length. USB-C Charge Port Please Note: Cartridges are sold separately. Frequently Asked Questions: How do I operate the Pulsar 510 DL Scribe Vape Pen Battery? The device features a single-button operation. Press the button five times rapidly to turn the device on or off. To adjust the voltage, press the button three times quickly. Is the ink cartridge refillable? Yes, the pen includes a functional, refillable ink cartridge, allowing it to be used as a standard writing instrument. What cartridge sizes are compatible with this device? The Pulsar 510 DL Scribe accommodates cartridges up to 12mm in diameter and 62mm in length, compatible with most 510-thread cartridges.