PAX 3 delivers a strong, pure vapor within 22 seconds, and subsequent heat-ups are nearly instant. The latest battery technology powers an oven 2x the strength of PAX 2. High-performance from the inside out, PAX 3 features medical-grade materials and a built-in rechargeable battery, for a reliable experience time and again. Backed by a 10-year warranty for added peace of mind. Colored LED lights provide real-time communication and the device conveniently vibrates when ready for use. PAX 3 heats when you bring it to your lips and cools when you set it down.