the hard material is not easy to break and protects your battery in all aspects Portable: easy to carry outdoors, super capacity and comprehensive protection of your power Category:Outdoor power supply Item Number:K011 Battery type:cylindrical aluminum case Battery type:liquid lithium ion battery (18650) Power capacity:5000MAh-10000MAh Charging power:PD22.5W Style:industrial style Function:wireless charging Colour:Black Material:plastic Size:200x88x43mm Package Contents: 1 * DIY Wireless fast charging power bank Case without battery Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.