The LoKey Multi-voltage KeyFob Style Vape Battery with built in USB charger is the perfect device for any vaper. This sleek and stylish device is designed to fit comfortably in your pocket or purse, making it easy to take with you wherever you go. The LoKey features a variable voltage output, allowing you to customize your vaping experience. With the built-in USB charger, you can easily charge your device on the go. The LoKey also features a preheat function, allowing you to heat up your device before use. The device is also equipped with a 10-second cut-off safety feature, ensuring that your device will not overheat. The LoKey is the perfect device for any vaper looking for a convenient and stylish device.