Amazon.com : Replacement Toothbrush Heads for Oral B Sonic Complete Brush Heads Refills 4 Pack Oralb Braun Compatible Replacement Brush Heads for Sonic, Sonic Complete & Vitality Sonic Oral-B Electric Base :
Repair Guide Published for Sonic Complete Toothbrushes from Braun Oral-B - ToothbrushBattery.com
Braun Oral-B Sonic Complete 4729 Repair - iFixit
Oral B Vitality Sonic Clean Electric Toothbrush – Super Dental Store