New battery case power case for Iphone 11 /Pro/Pro Max support audio output function.
Battery case for iPhone 11 Pro Compatible With Original Lightning Headphones & iOS 13 & Carplay
Material: Silicone TPU+ABS
Battery :Polymer Cobalt Lithium
Size:143*72*13mm/162*83*13mm
Weight: 80g/108g
Input:5V/1A
Output:5V/1A
Charging time: 3-4 hours
Capacity: 4200mAh for iPhone6/7/8,5200mAh for iPhone 6/7/8 plus, 5200mAh for Iphone 11 Pro Max.