The Ross Electronic Bagpipe can be programmed to play in the regular key of b-flat or one of seven different keys to match the pitch of other instruments. This gives you the versatility of being able to play along with many different instruments. 

There is also a harmony button where it will automatically play harmonies with every note. The unit is easily configured to remember volume and key settings if desired. The unit is specially programmed to shut down after a period of inactivity to conserve battery power. 

It can be used with it's built in speaker, or with headphones. There is also the option of hooking it up to an external amplifier. 

Uses 9 volt batteries.