Used for about a year. Sometimes it doesn't heat up completely even when charged. There are times when it heats up properly and times when it's lukewarm. Please understand that there is a defect. Instant purchase OK. I will omit the initial greeting (including replies) after the transaction. I will notify you of the shipment. Cover: Gray Purchased from: Z-CLAFT Purchase price: 3,490 yen [Search] Hot water bottle, rechargeable, simple cover, NUKY, Nukui, electric hot water bottle, keeps warm for 4-8 hours, retains heat for 15 minutes, cute, fluffy, no need to replace hot water, reusable, gray, PSE certified, rechargeable hot water bottle, stylish, cold weather gear, gift