Model Number: A500 Brand Name: OEM Key Specifications/Special Features: Built time stampSupport multi languageSupport voice operated recordingBuilt-in speaker Model No.: A500Storage Capacity TF/Micro SD card, up to 32GB Dimension 90x25x13mm Weight 60g Audio recording format PCM, WMA Music format MP3/WMA S/N >70db Headphone out 10mW+10mW 320hm Microphone 360 omnidirectional capacitor MIC Storage Media TF/Micro SD memory card PC Connectivity Yes Battery type Rechargeable Lithium Battery Battery life 16-25 Hours for voice record Display Segment code screen