100w high wattage :romoss has been at the fore front of charging and power delivery ,equipped with fast-charging technology, the led digital display : 3 brightness levels available .keep track of the remaining battery power with the easy-to-read led display. charge 4 devices simultaneous : if 4 devices are charged at the same time the fast-charging function is disabled. model : romoss pmt60 60000mah 100w portable power bank capacity:60000mah brand name: romoss type: li-polymer replacement battery: no display screen: yes input interface: micro usb output interface: usb-a output ports:4 ( 2 usb 2 type c) input ports: 2 ( 2type c ) romoss pmt60 charge time: about 4.5hrs