A fully charged 20,000mAh power bank should charge an iPhone 4 – 6 times from zero to full charge, before needing to be recharged itself. It should charge most modern Android phones 3 - 4 times from zero to full charge. If you’re using it for charging a tablet device, it should fully charge a large tablet once, or a small tablet twice. When used with a fast charging cable, this 20W power bank can charge your phone or tablet faster than a standard 10W power bank. 
There’s plenty of space for branding of your logo or message. The LED display will help you keep track of how much power is remaining in your power bank.

• 113 ( l ) x 6.9 ( w ) x 1.7 ( h ) cm
• ABS
• lithium polymer battery
• capacity: 20,000mAh
• Lightning input: 12W (max): 5V/2.4A
• Type C input : 18W (max): 5V/3A, 9V/2A, 12V/1.5A) 
• Type C Output: 20W (max): 5V/3A, 9V/2.22A, 12V/1.67A
• USB A output: 18W (max): 5V/3A, 9V/2A, 12V/1.5A
• digital power display
• includes Type C charging cable
• Swiss Cougar logo with rating label on the underside
• packaged in a Swiss Cougar gift box