Amazon.com: (Taelectric) AC/DC Adapter Power Cord for Omron M3 M3W M6 Comfort M6W Blood Pressure Monitor : Electronics
6V Adaptor for Omron Upper BP Monitors like M3, M6 Comfort, M7, M10-IT, 705-IT | eBay
Amazon.com: Nuxkst AC DC Adapter for Omron M6 Comfort Automatic Arm Blood Pressure Monitor HEM-7321 HEM-7321-E HEM-7131-Z HEM-7211 Power Supply Battery Charger : Electronics
Power Adapter Charger Omron | Adapter Power Supply Omron M3 - 6v 0.5a 500ma Ac Dc - Aliexpress