... change to warm/chill, with LED indicator;Turns yellow when cold, be red USB Business GiftsTechnical Parameters:1 ... ) Switch button to change to warm/chill, with LED indicator;Turns yellow when cold, be red ... ,plug &play .6)powered by usb with 4 feet of cable ,compatible with all platforms .Product Specification:1)Size: ... by 5V 500mA via USB from computer 6.5W5)With 4 feet of USB cable6)Color: Red&white ...