8 Heating Elements Upgraded version of 8 carbon fiber heating elements, covering the whole chest, abdomen, nape and waist LONG-LASTING WARMTH Different working hours at different temperatures, up to 8 working hours 3 Temperature Levels Three different temperature requirements can be adjusted through the switch button Machine Washable The heating element and vest are designed to withstand more than 50+ machine washes Previous page Next page 1 NECK HEATING 2 WATERPROOF FABRIC 3 SEPARET POWER POCKET 4 LARGE ZIP POCKETS 5 HIGH QUALITY ZIPPER PRODUCT DISPLAY heated vest men heated vest men navy heated vest men gray heated vest men black uupalee battery 8 Heating Elements ✔ ✔ ✔ ✔ ✔ Battery ✔ ✔ ✔ ✔ ✔ Water Resistant ✔ ✔ ✔ ✔ ✘ Wind Resistant ✔ ✔ ✔ ✔ ✘ Insulation Polyester Polyester Polyester Polyester — Mobile power connection method Click to watch the video Easy-to-use heated clothing, independent mobile power pocket design, does not affect walking, etc. Adjustable Heat Click to watch the video High, medium and low 3 temperature options, up to 8 hours of work How long does the battery last? When fully charged, it can lase for . 3.5-8 hours! How does the vest provide warmth? Heat is generated through 8 heating elements in the waist, abdomen, chest, back and neck, while adjusting med, high and low temperaturess through a switch. What should I do if I have problems during use? Please contact our stroe's team in time, we will be the first to solve for you. How to extend the use time of uupalee apparel? Reasonable use of the 3 temperature adjustment, it is recommended that the battery is fully charged before each use(charging time 5-6 hours). If you need extra batteries, please search for(uupalee battery) or (B0948JJ1RT) ON amzon