The 30000 mAh Lithium-Polymer Cells used in this power bank makes it a light-weighted and blast-free option. This power bank features 3 Outputs & 2 Input ports with universal device compatibility, enabling multi-device charging at the same time. VEGER W3008 also have the LCD Dispaly which indicates the charging. The exteriors are made to be super sturdy with a premium finish, making this power bank your no. 1 choice for uninterrupted and secure power support.