AC Adapter For Walgreens WGNBPA-540 WGNBPA-550 Blood Pressure Monitor Power Cord 30 days money back guarantee. 1 full year service warranty. 100% Brand New, High Quality AC Wall Power Charger (non-OEM) Input: 100V-240V AC; great for replacemnt or travel back up Build in Dynamic IC, Charger IC & Power fuse for rapid charging and over charge protection. Tested Units. In Great Working Condition.