The improved Khione 2.0 puffer heated vest is a great choice to keep you warm during any outdoor activity. Featuring four patented Microwire™ heating zones and a water-resistant, windproof shell for the ultimate heat and comfort, this heated vest combines Gerbing';s premium heating performance with fashionable style. Constructed with 200-fill synthetic down and is designed to be close-fitting for added warmth. This vest includes a rechargeable 7V lithium-ion battery for hours of heat on-demand. Simply turn on this great heated vest and experience warmth like never before.Gerbing 7V Battery Heated Jackets & Vests Include: 7V 3400 mAH Rechargeable Lithium-ion Battery Pack (25.16Wh)Wall ChargerDetailed InstructionsGerbing Lifetime WarrantyGerbing Khione Features: Four Microwire heating zones: Chest (2), Back (1) & Neck (1)200-fill synthetic insulation135° F Maximum heatActive heat retention technologyHeats for hoursWater and Wind ResistantComfortable & Stylish FitDurable ripstop fabric constructionBattery Integrated Temperature ControllerThis garment is breathable, flexible, and more durable than other insulated garments on the market. The added durable water repellent finish enhances the performance of the garment in wet conditions. To enhance the warmth of the garment, the bonded lining provides added comfort and maximum heating performance and heat retention.The battery has 4 heat settings as indicated by lights and Heat Times: 100% (4 red/blue lights) - 2 Hours75% (3 red/blue lights) - 3 Hours50% (2 red/blue lights) - 5 Hours25% (1 red/blue lights) - 8 Hours Charging Battery:  (We recommend charging overnight for the first charge.)Charge 100% before use (a full charge takes about 3 hours).A red light will appear on the wall charger when charging.The red light will change to green when charged.Maintain at least 25% power when the battery is not in use. This practice will prolong the life of any 7V battery. How it Works: Step 1: Power on by pressing and holding the power button.Step 2: To change temperature, press and hold the power button until the LED light reflects desired setting. *Power level setting can only be indicated when connected to the garment.Step 3: Check remaining battery life by disconnecting the battery from the product. Press and hold the power button, the LED indicator will show 1 to 4 lights. LED lights to indicate remaining power will illuminate (4 lights are full power).Turning on the Heat:Step 1: Locate the power pocket; it will be on the wearer';s left outer pocket.Step 2: Open the pocket and locate the power plug.Step 3: Turn on the battery by holding the power button until it lights up.Step 4: Insert the plug into the battery port and push it down to secure it in the plug holder. Step 5: Push the power button on the battery to select the setting you would like.Step 6: Place the battery into a pocket and close the pocket.