VMAX has the following Features:
*VMax can be adjusted from 3.0-6.0V volts in 0.1 volt increments.
*Built-in three digit display allows you to visually adjust your voltage.
*VMax holds two specially designed 18350 High Power Batteries.
*VMax is made of brass painted with black/silver.
*VMax PCB allows 5 Amperage output limit.
*VMax buttom never get stucked which flexble 360° turnning around.
****You will need to add a battery charger, at least 2 IMR Batteries (we suggest 4), and a tank to use this product.