What is Dual Power?The garment features Dual-Power compatibles, i.e. this garment can be powered via a supplied motorcycle power lead, or from an optional Keis portable battery pack. Allowing for use on or off the motorcycle.Please Note: Battery packs are optional extras. Can be used with an optional Heat Controller to select three different heat settings. The Keis B501W and B501WRP Premium Heated Ladies Bodywarmers are the only heated motorcycle garment made especially for female motorcyclists.As a popular bundle, get an optional heat controller and portable battery pack with your heated bodywarmer (for use of your heated bodywarmer when off a motorcycle):Features:A specially designed/tailored ladies bodywarmer, with elasticated side panels to provide a comfortable fit and stylish appearance.A heated collar, plus heated front and back panels, this garment makes use of the latest Micro Carbon-fibre heat generation technology for efficient warmth and great battery longevity.Built-in power connections (under each arm area, and into the inside waist) allow for the quick and easy optional integration of Keis heated gloves, trousers and insoles.Motorcycle fused power cable – connecting to your bike’s battery and providing a convenient power plug which you can plug the heated bodywarmer into once on the bike.