In Knives Out, the ability to perform "finger flicks" when shooting is considered important. This is a switch that allows you to accurately tap for finger flicks. This is for two-shot finger flicks (one-shot finger flicks are also available). Recently, "rapid-fire devices" have become popular, but unlike rapid-fire devices that just tap, this device is programmed and set up to differentiate between the length of time the tap is held down and the length of time before it is pressed 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 details about the product, please search for "automatic finger flick" 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 being improved daily, so it may not be exactly the same as the images. Please check Twitter for the latest version. *Although there is a risk of violating the terms of service of each game, our company assumes no responsibility. Please use at your own risk. *We have not confirmed the operation on iPhone and Android, and we do not guarantee operation. Please let us know in the chat after purchase whether you want one-shot or two-shot.