100% brand new and high quality Winter Warm Men's and Women's Heated Vest USB Infrared Flexible Electric Outdoor Jacket Features: High quality and 100% brand new 3-position temperature control adjustment. What temperature you want Waterproof all over. Washable USB charger. Mobile phone, rechargeable battery, computer ...... can be powered Carbon fibre heat conductor, safe and energy saving, heats up to 8 hours Product weight approx. 450g Light as a feather with a cotton inner clip to ensure no loss of temperature. Waterproof, stain resistant, warm, breathable, wear resistant, ultra light, anti-static, acid and alkali resistant. Softness index: softer Fabric name: Polyester Lining composition: Polyester (Polyester) Main fabric content: Polyester (Polyester) Thickness: Quilted Number of layers: Three layers Voltage: 5V/USB Interface power supply: 5V. 2A Mobile power: 8000MAH 1. thermostat connected to the power supply (battery), red, blue and green light flashes once, long press the button for 2 seconds to switch on, enter preheating mode, LED shows red, breathing flashing, high-end output, output power 100%, about 65 degrees Celsius, use for 3 hours, automatic jump to mid-range after 5 minutes of heating. 2. mid-range, LED display blue, use for 4 hours, approx. 55 degrees Celsius, output power 70%. 3. low end, LED shows green, use time 8 hours, about 45 degrees Celsius, output power 40%. 4. Click to switch gears, three gears cycle, long press for 2 seconds to switch off. Package contents. 1*heating vest Caution 1. Using different monitors, different computers, different camera angles, there may be angle colour problems. 2. Purely manual measurement, there may be 0-1cm error.