Ltpgt do you ever suffer with ice cold hands either in the winter time or even because of intense air conditioningthese gloves heat up through usb connection so you dont have to put up with ice for handsltpgt ltpgt glove size l 15 x w 12cmusb cable length 15 m operating voltage 5vcurrent work only a single 380ma the use of safe usb limited to the maximum 500ma flowfrequency of power 50hztemperature range 40 50cheating time 1 3 minlife 3000 hoursltp