This SimpleThings screen protector is compatible with Cosmo JrTrack 3 and 4 and comes in a stylish black color. It is made of tempered glass material which is scratch resistant and provides a clear view of the screen. The product dimensions are 1.33 x 1.33 x 0.5 inches and weighs 0.317 ounces. The screen protector is perfect for cell phones and is a great accessory for your device.