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4Score's 350 mAh Twist Control 510 Battery Pen is an absolute delight. Coming in a variety of colors, this threaded battery can meet and exceed your every need when it comes to concentrates of any kind. The pen is paired with a small twist dial on the bottom of the pen that can control the voltage, anywhere from 2.0v to 4.0v. The pen's button can toggle the power of the pen and it also has the option to preheat! Hit the power button twice to preheat, and five times to toggle the pen off or on.
