The Talk Tracker is a wireless device which records up to 4 hours of direct speech. It is small, light and easy to use. Files are stored as MP3 or WAV, which are then easily transferred to your computer via USB. Use the Talk Tracker to keep track of how children are progressing with their discussions. Simple to use, this great resource can be placed within a group of children in order to record their conversations, great for evidence and assessment without pressure. Playback on the device or download via USB. Inbuilt lithium battery charged through USB.