The differences between the Braun Series 3 340 and 380 wet-dry shavers are the number of battery indicator levels and the number of included attachments. The 340 has two battery indicator levels and a protective cap included, while the 380 has three battery indicator levels and a travel pouch included.
The 340 and 380 are similar in all other aspects. They feature flexible cutting elements, consisting of two foils on either side of a middle trimmer, along with a precision trimmer. Both are waterproof and fully washable. They each can be used on wet or dry skin with either gel or foam. Though there is a difference in the number of battery indicator levels, both models use LED lights in their indicators, and each includes a foil replacement indicator.
The 340 and 380 each has a running time of 45 minutes. They take one hour to fully charge or can be charged for five minutes, if only one shave is needed. Both feature a NiMh battery and neither includes a corded option, making both models cordless. For safety and energy savings, they feature an automatic voltage adaptor. They come with an instruction manual in their packaging, or the manual can be downloaded from the Braun website.