NOTE: * This battery case is only compatible for iPhone XR (6.1 inches), not compatible for other models and sizes.Headphone compatible ?iPhone lighting headphone ?Apple AirPods ?Other bluetooth headsetSync &Charging ?Advanced Sync-through Technology ?Support Lightning Cable ?Full Support with iOS versionsMax protection ?Unique raised bezel design ?High quality elastic soft material ?Bumper and hard-shell backplate???How to use? Step 1.Please fully charge the battery case before using the product. Step 2.Please charge the battery case with the apple cable.(Package not included cable ) Step 3. When you want to charge your phone through the battery case, make sure the phone is tightly closed at the bottom of the case, then press the power button for about 3 seconds to start charging. Step 4. When you want to stop the battery case to charge the phone, press the power button for about 3 seconds, it will stop charging.Specification: Battery type: Lithium-polymer Material? TPU Rubber Capacity: 7000 mAh Working Temperature: 0?-45? Input: DC5V/2.0A Output: DC5V/1.0AInclude: *1x user manual *1x battery case [Not included cable]IMPORTANT NOTES: 1. No cables are included, please use your original charging cable to charge it; 2. This battery case is ONLY compatible with iPhone XR 3. Apple CarPlay is NOT supported; 4. Wireless charging is NOT supported with the case on; 5. This battery case is NOT designed for screen protection;