REPLACEMENT BATTERIES - 2 pcs per pack - CR2032 lasts approx 60hrs. - CCR-2032 suitable for One Way, Colour Code, Double Trouble and Northern Lights products Important Information ! Keep out of reach of children. Do not swallow, if consumed seek immediate medical attention. Remove flat batteries from product, do not leave in product as corrosion may occur causing harm to animal. Insert battery correctly. Do not dispose of battery in fire or carry loosely in pocket or handbag. Do not mix batteries, change expired batteries at same time.