The Bubble Bang external battery is a 4000 mAh lithium power bank. Its case has 13 suction cups on the back to attach to your phone (or others). This portable battery will accompany you on all your travels. This USB battery is a universal charger: it comes with a USB to micro USB and Lightning cable. Its USB output will allow you to charge your phones, smartphones, tablets... For example, with its 4000 mAh power, it is capable of charging your AirPods 11 times before running out of juice and/or fully recharging an iPhone 11 twice. This portable battery is compatible with the latest Apple, Samsung, Nokia, HTC, Xiaomi, Huawei, Honor, Wiko phones...