This specially designed e-textiles coin cell holder from Kitronik has large connection points for the conductive thread. These are clearly marked to show the battery polarity. The unit also has a small power switch so that you can turn the power on and off. It uses a very thin PCB material to keep its size to a minimum. This allows it to be easily incorporated into your own e-textiles designs. Caution: This coin cell holder contains Nickel and should not be used in designs where it will be in prolonged contact with the skin. The board accepts CR2032 batteries. Dimensions: L44 x W20 x H4.5mm