Come and see our amazing products. It is square shape. This product uses high-quality lithium polymer batteries, which do not harm the equipment when charging. This product meets the standards for aircraft and high-speed rail. Power bank 10000mAh is portable and compact to bring for plane rides, camping, fishing. Give potential clients something they'll love show off with this power bank. Pls confirm with us about the packing info, stock color and exact production time before placing your order