How to replace the rechargeable battery in Braun toothbrush - YouTube
Replacement Toothbrush Heads Fit for Braun Oral B Electric Toothbrushes, 8pcs, Round Brush Head for FlossAction, Repuesto for Oral B Type 3756 3757 3744 3765 4729 4731 4739
Braun Advance Power Tooth Brush | 4731 | eReplacementParts.com