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 :
Brush starts but won't shut off until relplaced in charger(switch?) - Braun Oral-B Sonic Complete 4729 - iFixit
Akku 1600mAh 2,4V für Braun Oral B Sonic Complete 3721 4717