This is one of the slimmest IC recorders I have ever seen. This is Sony ICD-TX50 IC Recorder that only measures about 6.4mm in thickness and weighs about 50 g. It has supreme battery life. Full charge will give you up to 24 hours of recording and the handy quick charger feature lets you get about 1 hour of recording on just 3 minutes charging time. It has internal storage of 4GB as well as a microSDHC card slot. The rechargeable Li-Ion battery does the job pretty nicely. You can charge it from any USB port. Other interesting features of the new Sony ICD-TC50 IC Recorder include voice operated recording, noise reduction, standby feature etc. It comes with its own voice recognition software.
The new Sony ICD-TX50 IC Recorder has a price tag of $195 only and will be made available starting from Feb 21st 2012.