[Long time recording] Our mini recorder can record continuously for 30 hours after 1 hour of full charge. It has 192 hours of recording storage capacity. TDW portable recorder provides the best recording quality [Ultra mini voice recorder and keychain function] This voice recorder is only 2.4 * 0.9 * 2.4 inches, and can be used as a key chain to put it anywhere in your pocket, purse or suitcase.[Clear Voice Recording] The recorder integrates a voice activated sensor, and will automatically start recording after detecting the sound to avoid unnecessary space occupation. Equipped with a sensitive condenser microphone, it can provide high-quality recording.[Easy to use] One key to start and save recordings, the recordings are time-stamped, it is convenient to find files on the computer. This recorder is suitable for beginners. When the battery is low, the recording will be automatically saved before the recorder is turned off.