1. Special battery base for Echo Dot: the non-slip pad on the top will easily  and securely attached to echo dot. Special micro USB cable output and  optimized current make it perfectly match the Echo Dot. Echo dot can be portable used* with the build-in 20100mAh capacity battery.

2. Intelligent 3-output: special micro USB cable output and optimized  current make it exactly match the Echo Dot. Intelligently iM-Power USB  output keep your mobile phone always online. High speed USB-C 

 5V/3A output.

3. High capacity and top quality: 20100mAh capacity, quality guaranteed  with build-in A-Class lithium ion batteries, safer to use.

4. Digi-Power technology: show exactly remaining power in digital format.

5. iM-Power technology: detect your device intelligently and delivers the  faster charge.

6. Multiple smart protection system: keep your devices safe from over-charging, over-voltage, over-current, and short circuit.

* The charging time will be change base on the using environment, loading 

 devices and output processing.