Features: Protective case, back-up battery and power bank. Slim and stylish, serves as a protective case when not charging the phone. A fully protective hard-shell case with the minimum added bulk. Small and convenient enough to fit easily in your hand or in your pocket. Enough room for earbud hole which is suitable for any other brands earbuds. Perfect accurate hole design for both On/Off key, Volume control, earbud slot and camera. The powerful 4000mAh Li-polymer rechargeable battery can effectively provide 150% extra battery life to your phone.