Braun Qral-B 電動牙刷 拆解

Braun Qral-B 電動牙刷 拆解
1. https://www.youtube.com/watch?v=CgoURXugzjM
2. https://www.youtube.com/watch?v=POR8Lvsg880
3. https://www.ifixit.com/Guide/Braun+Oral-B+Professional+Care+9900+Triumph+Ni-MH+battery+Replacement/28633