Description Operating life (reliability) test Under no load, after 10 million times at a reciprocating speed of 10 to 15 times per minute Total resistance change 20% of initial value. Noise: less than 68mV Due to different batches, the appearance, color, and printed words of the product , which does not affect its use Material: Metal+Plastic colour: random color NOTE: randomly colored Green in blue or blue, Cannot be chosen the specific color. Package Contents: 10 x joystick Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.