A cool Ratchet Clock that works on a ratchet shaped system The big cog in the middle slowly turn to tell the hour and the little rachet at the top shows the minutes It drops down a cog eyery hour Simple but very effective Ratchet Silvery Clock is made of metal stainless steel material for much more durable to use Metal Desk Clock powered by one AA battery (not included) Color of the number and scale may come in different with the picture shown which is on the orange minute indicator Approved: CE / FCC China supplier:Email : fangzhengcn@hotmail.com Skype ID : chanceller819