AC Adapter For Casio WK-3000 WK-3200 WK-3300 WK-8000 Piano Keyboard Power Supply 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.