Pen Shape - The appearance of the pen makes it look like a real pen, which is hard to find. WAV Redording Format - Recording in WAV format makes it able to easily convert to other formats for playing without data loss. 8GB Memory & 64GB TF Card - Two modes of 8GB memory and 64GB TF card provide extremely large storage, which allows you to record as many voices as possible. 28 Hours Recording - 200mAh large capacity battery allows this digital voice recorder to record voice for 28 hours continuously. Intelligent Noise Reduction - High recording bit rate up to 512kbps and independent recording make the recorded voices super clear without noise. U Disk Function - The audio recorder can normally be used as a U disk to connect to a computer via USB to store and transmit voice files. Time Stamp - The recorded voice files will be named with a time stamp, which makes it very easy to manage. Specifications: Product type: Pen Shape Digital Voice Recorder Internal memory: 8GB Memory External memory: 64GB TF Card(not included) Recording time: 36 hours Recording bit rate: 512kbps Independent recording: Support Recordin format: WAV Noise reduction: Support U disk function: Support Power supply: 5V 1A 500mAh Battery capacity: 200mA Package size: approx. 18 * 9 * 3.5 cm/ 7.09 * 3.54 * 1.38 in Package weight: 125g Package List: 1 * Pen Shape Digital Voice Recorder 1 * User Manual 1 * Data Cableladacee