The chair is heated via a USB connection to your powerbank (not included). The recliner design delivers versatile comfort that helps you find the perfect posture. USB-powered heated chairHeated seat pads provide warmth in the seat areaThree heat settingsConstructed from robust powder-coated steelIncludes pocket for powerbank storageIntegrated cup holderStorage pockets for phones, snacks, etc.Carry bag includedPowerbank not includedDimensions: 84 x 58 x 99cmWeight: 5.45kgMax load: 120kgYour powerbank size determines heating time. Please use these as a guide for what powerbank size you will need. Heating time is only a guide and will vary depending on quality and age of the powerbank used.2500mAh = 1 hour 5000mAh = 1.8 hours 7500mAh = 2.8 hours 10,000mAh = 3.5 hours 15,000mAh = 5.5 hours 20,000mAh= 7.5 hours