Ortega Magus Uke, Active Pickup for Ukulele, Active preamp system for ukulele, For mounting onto the frame, Built-in tuner (during operation the signal is muted), Two-colour display, Volume and tone controls, Frequency controller, Easily accessible battery compartment, Requires 2 x CR2032 batteries (not included), Includes piezo pickup for ukulele, jack socket and cable clamp