The Yocan Lux 510 Threaded Vape Pen Battery is made in Alloy which is a material used in most premium devices. It's a durable pen compared to other vaporizers because of its hard plastic body. The Yocan Lux also features variable voltage setting which can be toggled by twisting the tip of the device. The available temperature settings are from 1.8 volts to 4.2 volts which gives the user a wide variety of temperature levels to choose from. The Yocan Lux has a 400mAh battery capacity which is enough for a few hours of vaping, especially when consuming oils. Features: Alloy Body Design Charges via Micro USB (Not included) connection is at the bottom of the battery 510-Threaded 400mAh Battery Variable Voltage with Pre-Heat Settings How to Use: Press button 5x quickly to turn on/off the battery Adjust temperature by turning the top sleeve to the desired voltage.