QZT Electronics Digital Voice Recorder Product Specifications: Size & Weight: Approximately 47*30.5*6.8mm, 15.2g Battery: 200mAh Charging Time: 1.5 hours (when fully discharged) Continuous Recording Time: 30 hours Continuous Playback Time: 20 hours Recording Storage Time: 16GB: Maximum 1138 hours of recording data storage [Easy Data Transfer with OTG Support!] OTG compatible, allowing easy data transfer to iPhone and Android devices. You can transfer data directly to your smartphone without using an app, making it convenient and smooth to share recorded data. [Easy Data Search with Time Synchronization Settings!] Equipped with a time synchronization setting function, you can easily search recording data chronologically. Because a timestamp is added to the recording files, it is very convenient when checking data later. You can organize records of meetings and important interviews chronologically, allowing you to quickly find the information you need, improving efficiency. *All accessories included at the time of purchase are included. Thank you for viewing.