The Yocan Uni Pro is a pocket friendly and durable 510 thread box mod designed specifically for use with oil/concentrate/extract tanks, by an industry leading manufacturer of wax pens and herbal vaporizers. Compact, discreet, and simple, the Yocan Unican Pro is the ideal device for new users, and on the go use. The Yocan Uni Pro is a second generation device that offers significant advancements over the original model, allowing for more precise customization with far greater ease. The compact and rugged frame houses a 650mAh internal cell that delivers 2.0 - 4.2V of power with variable voltage support in 0.1V increments to atomizers in the resistance range of 0.5 - 3.0Ω, as well as a 10 second preheat mode (double click start/stop) which softens concentrates before vaping to prevent dry hits. Easily adjust settings using the responsive triple button interface and 0.49” OLED screen which clearly displays the battery charge level, voltage, coil resistance, and timer. The Unican Pro accommodates cartomizers up to 14mm wide, with a diameter adjustment dial and rear height adjustment button. The 510 threaded magnetic base allows you to easily connect or disconnect the tank, and the front side micro USB port quickly and conveniently charges the battery. Features: Dimensions: 75.5 x 36.5 x 25.7mm Battery Capacity: 650mAh Variable Voltage Range: 2.0 - 4.2V (0.1 increments) Preheat Mode Double Click Start/Finish 10s Auto Off 0.49” OLED Screen Power Level Battery Charge Indicator Coil Resistance Timer Triple Button Interface Recessed Power Connection Magnetic 510 Thread Height Adjustment Button Level View Window Diameter Adjustment Dial (Max 14mm) Micro USB Charging Port Package Contents: (1) Yocan UNI Pro Box MOD (1) Magnetic 510 Base (1) Micro USB Cable (1) User Manual