Title: Great for Electronic Devices!
Review: These add an hour or more to the playtime of your electronic devices, but do not help mechanical devices with motors and things. I don't understand how they work, but on my Rio 500 they give me 2-3 hours more playtime. They are a very good buy for all digital things such as camera flashes and mp3 players, but are not worth the money in older discmans and other highly motorized devices. They more circuts the better. This is also known by the name Titanium and is virtually identical to Duracell Ultra Batteries.
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