Sunpentown AN-209 take the pressure off a sore back or strengthen a leaner waistline with this pressurized air belt. It wraps comfortably around your waistline and reaches into every contour to support and massage strained muscles. Supplied with an AC adapter and car charger.Features and Functions:Dual massage system3 levels of pressure intensity3 levels of intermittent vibration massageAutomatic power breakUse with home AC adapter or car chargerMicrochip technologyApplicable to the following conditions: obesity, sore waist, lack of exercise, stressed, fatigue, etc.Specifications:Input Power Supply: DC 12 VPower consumption: Max. 500mAOperating temperature: 41 ~ 113 F (relative humidity: 30~80%)Air pressure: higher than 600mmHG (on Strong setting)Air Flow: Approx. 2000ml per minuteDimension (L x W x H) inch: 14.7 x 5.5 x 1.4Net weight: 2 lbsGross weight: 3 lbsWarranty:One Year