Review title is Leaks terribly [SEP] Another design disaster from Philips.  When the old Sonicare died I didn't feel like buying another since they still use Ni-Cad batteries which were state of the art in the Eisenhower era but no longer.  This portable brush has the potential to be perfect.  It requires no base, no cord, no electrical outlet.  The batteries are always as fresh as you want.  Use any AA batteries - rechargeable, disposable, lithium.  Heck, even Ni-Cads if you can find any.  It's perfect for traveling.  It can be stored horizontally.  It takes the regular Sonicare heads.<br /><br />But its from Philips.  I read all the reviews about it leaking so I was very, very careful.  And when that didn't work, I tried running electrical tape around the bottom.  To make a long story short, there are tiny channels that the water still gets in and after a week or so, the bottom cap wouldn't even stay on.  A huge disappointment because I really liked it more than old Sonicare.  Now I'm hooked on true cordless so I'll have to check the other brands.