LP Stroboscope Mat 11.81 in X 3mm LP Turntables Calibration Disc 33/45/78 RPM for Record Players Tests Rotational Speed

Voltage range : No voltage High-concerned chemical : None Inbox adaptor : No Power Source : other Output Connectors : RCA Speeds : 33 , 45 , 78 RPM Brand Name : APWIKOGER Origin : Mainland China