Cheap And Discounts 28V 30V 31V 32V 0.5A 1A Sweeping Robot Speaker Audio Vacuum Cleaner Power Adapter DC 5.5*2.1MM Wholesale. Buy Directly From Merchant Shop1102076398 Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.