Amazon offers the Oral-B Pro 5000 SmartSeries Bluetooth Rechargeable Electric Toothbrush, model no. PG-6952, for $75. Clip the $15 off coupon to drop it to $60. With free shipping, that's the lowest total price we could find by $40, although we saw it for $10 less via a rebate a month ago. It features five cleaning modes, a pressure sensor, and real-time feedback via the Oral-B app for iOS or Android.