Product name: Outdoor battery heating gloves Size: One size fits all, as shown below Color: black red, black gray Fabric: Polyester [Battery]: 6 AA batteries are required Set sales: each set includes a pair of electric heating gloves, 2 DC battery boxes, no batteries inside Hot spot: five fingers on the back of the hand Heating temperature: about 50-60 degrees at room temperature. Product power supply: 4.5VDC battery box power supply. Please choose AA alkaline batteries for power supply, or rechargeable AA batteries (1.5V, capacity above 1500MAH) for power supply, and the battery box is 3 AA battery boxes. Ordinary carbon batteries or rechargeable batteries with smaller capacity cannot supply electricity and do not generate heat. The heating time depends on the battery capacity used, the larger the capacity, the longer the time. The full-capacity 1500MAH rechargeable battery can be used for about 2 hours after being fully charged.