1.20000mAh self-contained fast charging power bank.Support Hongmeng system Max66W/40W super Fast charging technology, the same as the original, and supports PD20W fast charging. 2.66W super fast charge Support HW Hongmeng 66W super fast charge.Original algorithm: no pop-up windows, no fear of system upgrades,The marking speed is the same as the original one40 minutes, 80% charge. 3.Explosion-proof battery Lithium polymer battery Safety explosion-proof.Polymer battery, TI scheme protection board, small internal resistance Safer charging and discharging, longer cycle life. 4.Four charging at the same time.Can charge four devices at the same time. 5.Black and white classic Life choose what you love.Black and white two colors, appearance and strength coexist.