Features: 100% brand new and high quality Digital Noise Reduction Technology: Effectively restore the original sound clarity, greatly reduce environmental noise, and allow users to hear the recording more clearly. One-key Recording: Record when power on, save when power off, simple operation. Intelligent voice control, voice recording, silent stop, save space and improve efficiency. It supports recording while listening, and you can grasp the recording effect in real time. Long standby time, it can record sound continuously for a long time. With its own delete function, you can delete unnecessary files directly without computer operation. Support a Variety of File Formats: Support MP3/WMA/WAV and other audio file playback, allowing you to enjoy high-definition voice when you plug in the headset. Convenient to Carry and Carry: The mini keychain shape is convenient to carry and carry. U disk function, 4G/8G memory capacity to choose from. Wide Range of Uses: It can be used as a tape recorder or as a keychain, suitable for classroom learning recording, business meetings, etc. Package Includes: 1PC Professional Recording Pen Keychain Specifications: Recording Method: Start Recording/shutdown Save Battery: Lithium Polymer Battery Charging Time: 1h Recording Format: Wav Music Format: Mp3/wma/wav 13gb: Save 192h Recording 32g: Save 384h Recording Sampling Rate: 48khz Recording Bit Rate: 192 Kbps Material: ABS Capacity: 16GB, 32GB Color: Black Product Dimension: approx. 25x66mm/0.98x2.60inches Net Weight: 125g/0.28lbs note: Please allow 1-2cm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.