In Knives Out, the ability to perform "finger-flicking" during shooting is crucial. This is a switch that allows you to accurately tap for finger-flicking. This is a two-tap finger-flicking device (one-tap versions are also available). Recently, "rapid-fire devices" have become popular, but unlike rapid-fire devices that simply tap repeatedly, this device is programmed and configured based on two factors: the length of time the tap is held down and the length of time before tapping again. Also, as it is a new model, it is placed on the screen in a way that is similar to normal operation. MicroUSB is required for power. This product is developed, manufactured, and sold by our company. If you need more product details, please search for "automatic finger-flicking" on social media. It can also be used for games that tap on smartphones, such as Apex, COD, and PUBG. This is a must-have for those who need a mechanical shooting button. (Since the settings are for Knives Out, we do not guarantee zero recoil.) *The product you receive will be the latest version and is constantly being improved, so it may not be exactly the same as the images. Please check Twitter for the latest version. *We are not responsible for any violations of the terms of service of each game. Please use at your own risk. *We have not confirmed the operation of this device on iPhones or Android devices, and we do not guarantee its functionality. Please let us know in the chat after purchase whether you want the one-tap or two-tap version.