Ooze 650 mAh Twist Grade A Battery- 510 Thread, Variable Voltage 3.3V - 4.8V- Available Colors: Black/ChromeSafety Disclaimer: Please use responsibly. Electronic vaporizer products are intended for use by persons of legal smoking age. The Ooze vaporizer products are not intended for use by non-smokers or by children, women who are pregnant or breastfeeding, or persons with or at risk of heart disease, high blood pressure, hypertension, diabetes, or taking medicine for depression or asthma. Discontinue use and consult a physician if you experience misuses symptoms such as nausea, vomiting, dizziness, diarrhea, weakness and rapid heart-beat or hypertension. If used with Nicotine: Nicotine is addictive. Intended for use by existing smokers aged 18 years (21 years where applicable) or over, as an alternative to tobacco cigarettes. Not to be used by children, pregnant or breast feeding women or persons in ill health. If unsure of use please consult your doctor. Ooze products are not intended as nicotine replacement therapy or as a smoking cessation product.