Specification Available Ship to:United States Details [Dual-Zone Smart Heating Chair]Embrace rapid and even warmth in just 3 seconds with our innovative composite heating technology. This heated chairs outdoor sports features two independent heating zones for the seat and backrest, each with 3 adjustable temperature levels (104°F-149°F). Powered via USB (5V/2A), it delivers 5-9 hours of consistent heat, making it the perfect companion for cold-weather activities like hunting, camping, and outdoor sports