Sound Leaf? Unless you live in Japan, there's a very good chance you don't, so let us refresh your memory: it's a rather interesting Bluetooth device that looks a bit like a miniature handset and functions as a bone-conduction receiver for taking calls in noisy environments. It's a cool idea -- Bluetooth headsets are very, very rarely as loud for the wearer or as noise-free for the person on the other end of the call as they should be -- but for whatever reason, the technology really hasn't taken off in full force. Again, that's unless you're in Japan -- because NTT DoCoMo's just released the Sound Leaf+, a new take on the original that looks almost exactly the same but trades an all-white color scheme for a more in-your-face black getup and apparently features improved reception. It'll go for about 15 hours on a pair of AAA batteries, and the mouthpiece folds conveniently away when not in use. We'll take a dozen, NTT; you can float 'em across the Pacific in a bottle, if you like.