1.chromatic tuner 2.mini,easy to carry 3.sensitive&accurate tuning 4.color:orange, ... red,white,blue,black 5.fast delivery Eno keyring mini ... blue,blackPower1*CR2032(button battery)Feature:1.Mini and fashional keyring design,easy to carry2.color: orange,red,white,blue, ... show (United State) Our production line: Eno keyring mini chromatic clip tuner