Fast charging on the go: The external battery powers smartphones, tablets, Bluetooth speakers, and other mobile devices—whether in the office, on a plane, or at the beach. The power pack provides a boost of energy while traveling; the portable charger can charge two devices simultaneously. The optimized charging process protects the battery and extends the lifespan of your phone, tablet, and more. Certified cells ensure the highest quality and safe charging: protection against overcharging, overvoltage, overheating, and short circuits. Maximum compatibility for all phones, tablets, and other devices, such as smartwatches, digital cameras, or Bluetooth headphones. A single charge of the powerful battery pack allows, for example, the Samsung Galaxy S21+ to be used for an additional 85 hours. The power pack can be fully charged via the USB-C port in 6.5 hours. The integrated LED capacity indicator shows in four levels (100%, 75%, 50%, 25%) how much power is still available. Stylish design with a premium fabric surface: The special material combination prevents unsightly fingerprints from remaining on the case. Input: USB-C. 2 outputs: 1x USB-C, 1x USB-A.