Feature: 1. Portable Accessory: During traveling or business trip, you can carry it in your pocket, briefcase or backpack to charge your phone at any time. 2. Emergency Charging: You can charge your phone no matter where you are, less limitation for your movement. 3. Protective Function: Adopts overvoltage and overcurrent protection, taking full care of your mobile phone and phone battery. 4. Wide Application: Suitable for all kinds of mobile phones, and can charge MP3, MP4, camera, tablet computer and other products by changing different connection cables. DC 5V universal power supply. 5. Display Screen: LCD screen can display battery voltage current value, battery remaining power. It can easily power other devices.The capacity is 4 batteries, and batteries are not included. Specification: Item Type: DIY Power Bank Material: ABS Model: M08 Application: For Mobile Phone Battery Type: 18650 Battery x 4(Not Included) Weight: Approx.89g/3.1oz Output Port: USB1 5V 1A, USB2 5V 2A Input Port: Micro 5V 2A Scope Of Application: Support All Types Of Mobile Phone Charging. Package List: 1 x DIY Power Bank Case