This is the PGYTECH Photographer's Gloves Heating Master Mittens. I purchased these in 2024, but they have been stored at home without being used. I will be selling them as I don't anticipate using them in the future. Quoted from the website: Heating Mechanism: Adopts graphene heating technology. With 3-level temperature settings, you can quickly and evenly adjust to a comfortable warmth. High = approx. 81 minutes, Medium = approx. 102 minutes, Low = approx. 215 minutes (varies depending on the environment) Portable Battery: A 4000mAh Type-C interface supports long-lasting heating and also functions as a battery for smartphones, etc. *Use of non-genuine batteries other than the original battery is not recommended. Excellent Splash-Proof Performance: Uses level 4 splash-proof material, effectively coping with various weather challenges. Non-Slip Comfort: The non-slip, durable genuine leather palm and palm pad cushioning layer provide a comfortable grip while firmly protecting your hands. Breathability and Waterproofing: The main fabric on the back of the hand achieves a breathability of 9850g/mm.D, ensuring lasting comfort. Three-Finger Flip: Designed to balance warmth and the need for precision equipment operation, ideal for button operation of drones, etc. I will ship them in a cardboard box.