Features: Made of high quality PVC and crystal velvet, durable in use. Adopts cute polka dot print design. Excellent warm keeping performance. Automatic temperature control to prevent overheating. You can put two hands in it, keeping warm for a very long time. Rechargeable design, convenient to use. Compact and lightweigt, easy to carry. Usage: please pull water plug,and there is a hole that insert funnel into hole, and add water into it, add 1000ml. Please plug the water plug tightly. heated Water bag to 70 degrees will stop heating, intelligent power off design, safety and explosion protection. Note: the product is empty bag, need you to pour water 1000ml into bag. Specifications: Item Type: Hot Water Bag Material: Crystal Velvet, PVC Color: Blue/Pink/Red/Black Voltage: 220V/50HZ Using time: 2- 8 hours Charging Time: 8-12 minutes Water Capacity:1100ml Item Size: 26*19cm/10.2*7.5 inch Net Weight: 180g/6.4oz Package: 1 x Hot Water Bag