Product Name: Snowfield Lovely Pets Hand Warmer Product model: funlab 20 Lithium battery energy: 29.6Wh Battery capacity: 8000mAh Input: 5V/2A Output: 5V/2A Product size: 110x60x44mm Weight: 250g Heating Power: 5W Temperature control: low temperature 45°C to high temperature 55°C Product Grade: Qualified Executive standard: GB31241-2014