Magnetic Design: Snap two warmers together for easy portability, or use one alone for single-handed warmth. Flash Charge In Just 1H: With two 3000mAh batteries, get 3 hours of warmth from a 1-hour charge. 4-Temperature Settings: from air-conditioned offices to outdoor adventures.Level 1: 104°FLevel 2: 113°FLevel 3: 122°FLevel 4: 131°F
