Tonar’s strobodisc is a 12inch ideal accessory to have when checking and/or adjusting the speed of your turntable. The mentioned disc has on one side 50Hz & the other side 60Hz. Before using it make sure to check which Hz is needed for you, i.e. in the US it is 60Hz & Denmark 50Hz. Unfortunately, the item does not come along with a strobe light but we can suggest finding a strobe light mobile app that can help with testing the speed (8 1/3; 16 2/3; 33 1/3; 45; 78 RPM).