Built-in 4000 mAh battery+built-in ultra-quiet cooling fanThis mobile game controller has built-in 4000 mAh large capacity Class A lithium-ion battery, which can run continuously for 6-8 hours (fan only),it can also be used for your mobile phone charging ,for indoor and outdoor use. Equipped with a 4000-rpm ultra-quiet cooling fan, it can effectively prevent the smart phone from overheating. Special designThe controller handle is ergonomically designed and the handle fits perfectly on the hand, making it easy to hold even when used for long periods of time without fatigue.High-quality red copper conductive material is used, so conductivity and sensitivity become high. Since the trigger button can be flipped 180 degrees, you can reply to the message immediately without removing the handle Accessible Design+Pressure contact padAccessible Design, the button does not block the screen/view of the smart phone You can enjoy high speed shooting without missing the enemy. Pressure contact pad: Sensitive joint with silicon pad Even if the trigger button is pressed, the smart phone screen will not be scratched. Easy to UseConvenient to use, no tools or drivers needed to complete the installation in seconds. Just set your shoot and aim buttons under the touch pad on "customize" page, save the setting and start the game to be a winner. No Power supply and driver needed, easy to use, high precision, high sensitive Wide CompatibilityPerfectly with 4.7 to 6.5inch smart phones. Designed for games on iPhone IOS and Android, such as PUBG etc.(Note: Size cannot be applied to smart phones outside the range of 4.7 inches to 6.5 inches) 4-Finger OperationWith the Mobile Game Controller, you can simultaneously move, turn, aim and shoot by using the index fingers to press the buttons, which can eliminate the trouble that use thumbs only to make all operations.Ultra-quiet cooling fanWith a smart phone cooling fan, the powerful wind can quickly dissipate the heat generated during the operation of the mobile phone, prevent thermal runaway and extend the life of the smart phone battery.4000 mAh Power BankThe built-in battery not only drives the fan to lower the temperature of the smart phone, but also charges the smart phone. During the game, don't worry about the phone's low battery shutdown. Set the settings of the smart phone PUBG Mobile Game Controller Step 1Loading the game and click the "Settings" button. Step 2When entering the setup screen, click the "control" button, then click the "customize" displayed in the next step. Step 3Move the "shooting" and "aiming" button to the top. The buttons can be made larger, they should be set larger to improve the response. (Note: When using this product, it is best to turn off the pop-up notification window settings on your smart phone.) Package content 1 *4 finger operation controller 1 * USB cable 2 *Silicone Pressure contact pad