Product Description:The ELF Canndual Pro 650mAh Battery is the ultimate cartridge companion with dual voltage output and compatibility for most 510-thread carts. Designed with a sleek housing and preheat function, it?s ideal for both thick and thin oils. The 650mAh battery ensures long-lasting use, and USB-C charging gives you quick and efficient power-ups. Product Specification: Battery Capacity: 650mAh Thread: 510 universal Voltage: Adjustable dual-mode Features: Preheat function Charging: USB-C Variant Blue Red,Green Red,Orange Blue,Pink Purple,Yellow Orange Package Contains/Includes: 1x ELF CannDual Pro 650MAH Battery – 1PK