SUPTEMPO Electric Slippers Cordless Foot Warmer USB Warm Slippers Walkable Foot Heater Electric Shoes With 2 x 5000mAh Batteries Made in Japan Heater 3-Level Temperature Adjustment 1.5m Extension Cord Included Warms Feet Washable Foot Warming Slippers Cold Feet Countermeasures Unisex Size: 22.5-25cm Unused Item Purchase Price: ¥7,599 Image 6: Confirmed heating using the included batteries Image 8: Battery has stains Image 13: Instruction manual has folds Batteries can be stored in the slipper pockets There are traces of shipping labels on the box The box in the image will be used for shipping It takes about 4 days to ship the product after payment is confirmed, so please be aware if you are in a hurry Shipping is planned via Rakuraku Mercari, but may change to Yu-Yu Mercari without notice. (Both are anonymous shipping) [Cordless Electric Slippers for Free Walking] The design allows you to smartly store the batteries in the slipper body, completely freeing you from the hassle of cords, and you can move freely anywhere, just like ordinary slippers. An innovative electric foot warmer that is very useful in various situations such as when working in the kitchen or at the counter, walking around the office, working at a home office desk, watching TV, or doing housework. [Comes with 2 large-capacity 5000mAh batteries] Two 5000mAh batteries with a stable DC 5V/2.1A output are included, allowing for approximately 3.5 hours of continuous use on high mode, approximately 5 hours on medium mode, and approximately 7.5 hours on low mode. A 1.5m USB extension cable is also included, so you can use it while supplying power from a USB-A port power source such as a computer, even without using the included batteries (in this case, it will be wired). [Temperature Adjustment] Temperature can be set in 3 levels: High (approx. 60-65°C), Medium (approx. 50-55°C), and Low (approx. 40-45°C). [Washable] It has a simple diamond-pattern flannel design and can be used by both men and women. After removing the batteries, the slippers can be washed in a washing machine or by hand, so you can use them cleanly and comfortably.