UT3 Pro provides double-sided heating that wraps around from palm to fingertips. With four levels of heat, reaching up to 58 degrees, you can always find a suitable level of warmth. Battery capacity 5,000mAh*2 Charging Time 3 Hours * 2 Running Time 4-8 Hours * 2 Item Weight 220?Grams Size 10.5*5.6*4.1 cm