Here is a smart printer that you can take with you anywhere to print your documents. The HPRT MT810 is compact enough to fit in your bag. It comes with Bluetooth 5.0 connectivity and operates without ink. This thermal printer measures only 280*95*50mm. It can print at different lengths.
The MT810 has a 2600mAh battery life that lasts for 4 days. It works with iOS and Android devices. You can find out more about it here.