Product Name: Hot Water Bottle Size: 26 x 18 x 4 cm Weight: 1.66 kg [No Need to Replace Hot Water, Rapid Heat Storage Charging, Long-Lasting Warmth] This environmentally friendly hot water bottle can maintain warmth for up to 8 hours with a 15-minute charge. [Convenient to Carry, Comes with a Warming Pocket Cover, Gentle on the Skin] It comes with a warming cover that feels good against the skin. It doesn't dry out the air and can maintain a temperature that is gentle on the skin. [Large Size Hot Water Bottle, Cordless, Usable Anywhere] The large size provides long-lasting warmth. It's cordless, so you can use it anywhere, making it convenient for warming up cold areas. [6-Layer Explosion-Proof Design, Safe and Secure] The 6-layer explosion-proof design and water-and-electricity separation design enhance safety. It automatically turns off when the temperature exceeds 75°C. It is PSE certified and registered with the Ministry of Economy, Trade and Industry. You can use it with peace of mind. [Economical & Energy-Saving] No need for water and gas bills due to electricity usage, and it costs about 2.5 yen per charge. It is also recommended for winter cold対策. Charging Instructions 1. Open the cover of the main unit. 2. Place the main unit and the heat storage plug on a horizontal and stable surface as shown in the diagram. 3. Lower the arm and firmly insert the heat storage plug into the back of the heat storage outlet. 4. Plug the power plug into the outlet. The heat storage plug will light up, and heat storage will begin. 5. When the heat storage plug turns off, heat storage is complete. After completion, be sure to remove the heat storage plug from the main unit and the power plug from the outlet before use. About Low-Temperature Burns Low-temperature burns are burns that occur when the same part of the skin is in contact with something that feels comfortable (a temperature slightly warmer than body temperature) for a long time. The approximate skin temperature in contact with a hot object and the time it takes to get burned are as follows: ● 44°C: 3 to 4 hours ● 46°C: 30 minutes to 1 hour ● 50°C: 2 to 3 minutes [Peace of Mind Guarantee] We accept returns within 30 days. If you are not satisfied, we will provide a full refund. Thank you for viewing.