This Review Title is more power and the content is: Had an older one bought years ago with a 3.6 volt power supply, that unit finally died and I got this unit. This has a 5 volt power supply with a lithium battery and can use the accessories from the older one in addition to the ones it came with.There are other information for this review, one is This reviewer did purchase it and the other is 0 people think this review is helpful.