Raindrop is a mobile printer that interlock with tablet via bluetooth. It realises 3 world-first. The first one is compact water-drop type design. Store receipt role printer regardless of its compactness, and retractable arm-bar serves both power supply and tablet stand function. Secondly, auto-cut function installed world-first as a mobile printer. Finally, connect with cash-drawer for register. We couldn’t use printer outside with no power supply until now, but you can use anytime anywhere by installing a battery.