Heated Waterproof Mitten Reinforced Palm Integrated Knuckle Padding for Extra Protection Integrated Heat Elements: Over Top of Hand Fingers 4 Selectable Heat Settings Wrist Cinch Closure System Split-Pack Batteries to Reduce Wrist Weight 7.4volt Rechargeable Lithium-Ion Battery Up to 8 Hours of Heat Per Charge Battery Features: Split Pack Rechargeable Lithium-Ion Battery (7.4V 2000mAh) Up to 8 Hours of Power Per Charge UL/CE certified AC wall charger included Charge Time 3-4 hours* * Footnote: Charge time is based off using included AC wall charger Includes: (1) Pair Storm Heated Mittens (2) Split Pack Rechargeable Lithium-Ion Battery (7.4V 2000mAh) (1) AC Charger Replacement batteries: Battery SKU: MWBT2 - 7.4v Powersheer? Mini Glove 2 in 1 Battery (7.4v 2000mAh)