The YoCan UniPro Cartridge Battery mod is a newly updated design of the previous version, improving it with a adjustable voltage based output, 10s preheating functionality, and adjustable height and width settings to neatly accommodate any and all vaporizer cartridges available on the market today. Featuring an adjustment dial and sliding lever, the UNI Pro can match with any cartridge of any length or diameter, hiding it within the recessed 510 connection tunnel. Packaged with a threaded magnetic 510 ring, the UniPro can quickly release or attach a cartridge with the magnetized threaded 510 connection. Press the fire button 2 times to activate the pre-heat setting.