Maximize Your Mobile Experience This durable‎,‎ ultra‎-slim case enclosed a maximum capacity 3500mAh battery core‎,‎ with the ability to double the lifespan of your iPhone7 Plus battery life for some series extra hours‎.‎ The Joyroom battery case has fully functional set of features including LED power level indicators so you can check power remaining at any time‎,‎ and pass through syncing so that you don‎'‎t need to remove the battery to sync with iTunes‎.‎ Go Further With Joyroom Protection and Power Experience your iPhone7 Plus in a whole new way‎.‎ The best part of the Joyroom iPhone 7 Plus Portable Charger provides your iPhone with premium protection against the wear and tear of everyday living‎,‎ while it is still keep its minimal form factor‎.‎ With its light‎-weight‎,‎ simplest bumper design‎,‎ the Joyroom does an outstanding job to extend your time to rock‎,‎ talk‎,‎ and protect your iPhone‎.‎