Product Description Material: metal + glass Size: 85mm*36mm*14mm Memory: 8GB Screen: 1.0 inch Recording Mode: Continuous Recording Recording Format: WAV Power Consumption: 0.8mA*2mAR Recording Sampling Rate: 8KHz/16KHz/48KHz Playback Speed: 48KHz*16bps Recording/Playback Format: WAV, MP3, WAV Memory Card Type: Does not support expansion cards Display: Monochrome display Transmission Interface: USB 2.0 Recording Distance: 10 meters - 20 meters Power Supply Mode: Built-in lithium battery Battery Capacity: 220MAh Battery Life: 18 hours recording, 5 hours playback (plug in headphones to listen) Color: Black, Iron Gray, Silver Quantity: 1 pc Package Contents: 1*recording pen (with battery) 1. Multifunction: The digital voice recorder offers many functions such as MP3 player, one-click recording, phone recording function, high recording quality, automatic storage, time setting. 2. High-Quality Sound, Easy to Use: This recorder's microphone has higher sensitivity, and you can enjoy better sound quality. Simple three-button recording, saving, and playback, easy to use. 3. 8GB Memory, Longer Recording Time: The recorder can record up to 560 hours (32kbps recording quality); built-in rechargeable battery; when fully charged, you can continuously record for 18 hours and play back for 5 hours (connect headphones). 4. High-Fidelity Recordings: The voice recorder features microphones that record in HQ mode and intelligent dynamic noise reduction, ensuring excellent sound and recording quality with 360-degree audio capture. External speakers reproduce your recordings with exceptionally high quality. 5. Wide Range of Applications: The voice recorder is ideal for universities, lectures, discussions, interviews, group presentations, and podcasts. It is particularly suitable for schoolchildren, students, teachers, professors, businessmen, and other groups.