[DETAIL] There are 2 models Recorder Q91 and M12 optional, different model has different appearance and Feature, please choose suitable model before purchase: The following is a detailed description of Model Q91 Features: 1. It adopts a zinc alloy shell, which has a good feel and is sturdy and durable. 2. Time stamp, automatically naming record files based on dates. 3. Real time monitoring and recording, supporting voice activation, recording with sound, and silent stop. 4. Multifunctional recording pen, capable of writing, MP3 player, and USB drive. 5. Wired earphone control, previous/next file button. 7. Automatically detect the battery before power outage, and save the record file when the battery is low. 8. One click recording, one click saving recording files. 9. Intelligent noise reduction, DSP acoustic processing, and clear recording effect. 10. Used for meetings, training, learning, business, etc. Specifications: 1. Product name: Recorder 2. Product model: Q91 3. Recording format: WAV 4. Playback format: MP3/WMA/WAV 5. Battery capacity: 180mAh lithium battery 6. Recording time: 15 hours 7. Playback time: 10 hours 8. Charging time: 2 hours 9. Memory expansion: up to 128GB TF card (excluding) 10. Recording quality: 384kbps, 192kbps 11. Headphone jack: USB 12. Charging port: USB 13. Product size: 148 * 13mm 14. Net weight of product: 23g 15. Product material: zinc alloy Packaging includes: 1 * Recording pen 1 * User manual 1 * Earphones 1 * USB data cable The following is a detailed description of Model M12 characteristic: 1. Adopting a zinc alloy integrated shell, it is sturdy and durable. 2. Timestamp, automatically name record files by date. 3. Can replace pen refills, not only for recording, but also for writing. 4. Used as a recorder, MP3 player, and USB drive. 5. MP3 player with 3.5mm headphones included. 6. High quality WAV recording format. 7. Supports volume control, play/pause, and file deletion. 8. Automatically detect the battery before power failure, check for low battery level, and save a record file. 9. Voice activation, audio recording, silent pause. 10. One click recording and one click saving of audio. 11. Intelligent noise reduction, dual microphones. 12. Suitable for meetings, training, learning, business, lawyers, etc. Specifications: 1. Record format: WAV 2. Playback format: WMA/MP3 3. Working hours: approximately 10 hours 4. Battery capacity: 150mAh lithium battery 5. Memory capacity: Supports up to 128GB TF card (not included) 6. Microphone: Built in dual microphones 8. Recording quality: 192kbps, 384kbps 9. Playback mode: 3.5mm earphones 10. Working temperature: 0 to 45 degrees Celsius 11. Earphone jack: 3.5mm 12. Noise to signal ratio: 80db 13. Product size: 146 * 13.6mm 14. Net weight of the product: approximately 20g 15. Compatible system: Windows 2000 and above The packaging includes: 1 * Recording pen 1 * User Manual 1 * 3.5mm earphones 1 * micro USB cable be careful: The TF card in the photo is not included! Due to manu [ATTRIBUTES] - Hign-concerned Chemical: None - Dimensions (WxHxD): 146*13.6mm - Voice Activated Recording: Yes - Hign-concerned Chemical: None - Dimensions (WxHxD): 146*13.6mm - Voice Activated Recording: Yes - External Microphone: Yes - Balanced Out: No - Package: Yes - Model Number: 0-128G Mini Pen - Playback Formats: MP3,WMA - With Speakers: No - External Memory: Yes - Record Audio Format: WAV - Brand Name: AideeMaster - Origin: Mainland China - Certification: CE - Feature 1: Activated Voice Recorder - Feature 2: U Disk Professional Audio Record - Feature 3: Noise Reduce Sound Digital Dictaphone MP3 Player - Feature 4: Digital Activated Pen - Feature 5: 360 Sound Audio Activated Dictaphone Recording Device - Feature 6: Voice Controlled Audio Recorder Pen - Feature 7: Audio Digital Pen for Meetings - Feature 8: Digital Voice Recorder