• CNC copper alloy material, electroplating process, can write, high concealment
• One-button recording design, multi-function operation with wire control, with delete function, playback LED light indication
• Lossless PCM recording 512Kbit, optional voice-activated recording 50dB, automatic split recording, can be changed to 1536KKbit
• 15 hours of continuous recording, 30 days of standby, 64GB capacity (90 hours of recording storage)
• Support multiple playback formats: MP3, WMA, WAV

Specification:

• Model: Q91
• Size: 148x13mm
• Weight: 23g
• USB interface: Micro interface
• Battery capacity: 180mAh
• Recording time: about 15H 
• Playback time: about 10H
• Charging time: about 2H
• Recording format: WAV
• Playback format: MP3, WMA, WAV