This Matrix MR-600 Quartz Metronome is a reliable time-keeping device for musicians. Its digital display allows for precise control over the tempo, while the plastic material ensures durability. The metronome has been tested and is functioning properly. It is suitable for use in a variety of musical instruments and gear settings. The brand is Matrix and the MSRP is $61.59. This model is MR600 and it is a digital type metronome. It is not a custom bundle and has not been modified in any way.