It has a powerful heat-dissipating function, which can prevent the phone from overheating for a long time by opening the cooling fan and prolong the service life of the phone and batteryDesigned for shooting games: Alloy trigger and ergonomic handle provide a more comfortable grip feelingBuilt-in 4000 mAh capacity battery, for PUBG mobile controller can charge the phone while cooling the phone. Don't worry about running out of battery when you enjoy the gameEasy to use, suitable for all models of 4.7-6.5-inch for iPhone / Android phones. 0.1500 Package weight: 0.181 kg Product size: 14.00 x 12.00 x 3.50 cm / 5.51 x 4.72 x 1.38 inches Package size: 14.50 x 12.50 x 4.00 cm / 5.71 x 4.92 x 1.57 inches Package Contents: 1 x Controller