Stay Warm: The rechargeable heated vest features a heating system consisting of 5 carbon fiber heating pads (graphite) that evenly heat 5 core areas of the body, including the neck, back, abdomen, and waist, to maintain body temperature, promote blood circulation, and relieve muscle pain and tension. Use the two buttons to control the two heating zones separately: Two buttons allow you to set different temperatures for the third gear. You can select the area to heat your clothes based on the weather temperature and your body feeling. Independent control design makes your equipment more energy-efficient and durable. 3 Temperature Control: This heated vest has three heating temperature levels. The heated jacket can be Three temperature settings at the touch of a button. High temperature: red, medium temperature: white, low temperature: blue. Heated comfort: The electric heated vest is compatible with any power bank with a 5V 2A/2.1A USB output. When connected to a 5V/2A power bank (not included), press and hold the power button for 3 seconds. Graphite carbon fiber heating elements generate heat in the core area. Suitable for various scenarios: A heated vest will get you through the winter with ease. Perfect for outdoor activities such as snowmobiling, motorcycles, mountains, camping, hiking, skiing, fishing, hunting, or everyday life and office business. Suitable for use in autumn and winter.