best power bank for smartphone

Specifications:

• Model: PB200LZM
• Capacity: 74Wh, 20000mAh
• Input Ports: Micro-USB, USB-C
• Input: 5V/2.1A, 9V/2.1A, 12V/1.5A
• Output Ports: 5.1V/2.4A, 9V/2A Max, 12V/1.5A Max
• Output: 5.1V/3.6A
• Dimensions: 154 x 73.6 x 27.3 mm
• Colors: Black, White
• Warranty: 3 Months