I am now using Xander glasses but the battery life is only about 2 hours. How is the battery on these glasses. Also Xander seems to have a problem keeping up with conversations and reinitializes fairly often. How the G1 at keeping up with conversations? Does the person talking have to speak slowly? What about performance in a noisy environment like at a restaurant? Is it possible to use a remote microphone or is that not necessary? Any comments about the actual use to transcribe conversations in real time appreciated.