Thank you for viewing. This is the discontinued KORG HB-1J Metronome with Hygrometer and Thermometer. Although it is a new, unused item, it has been stored at home, so I will sell it to someone who understands this. The KORG HB-1J features a metronome, thermometer, and hygrometer. - Brand: KORG - Model Name: HB-1J - Functions: Metronome, Thermometer, and Hygrometer - Operation Buttons: Metronome ON/OFF, Start/Stop, Tempo/TAP, Beat/Volume - Accessories: Instruction Manual Thank you for viewing.