The Kalaxio KX-Q66 digital voice recorder has 8 GB of internal memory and saves recordings in WAV or MP3 format. It features sound detection with adjustable sensitivity, a timer, and date and time settings. It does not flash an LED or emit any sound during operation, and it can also be used as a USB drive.

• Internal memory: 8 GB
• Recording formats: WAV, MP3
• Recording bitrate: 32–3072 kbps
• Recording time per charge: up to 25 h at low quality
• Recording capacity: approximately 100 h
• Sound detection: adjustable sensitivity, levels 1–7
• Bitrate settings: 32, 64, 128, 192, 256, 512, 768, 1024 and 1536 kbps
• Microphone sensitivity (GAIN): 0–7
• Recording sequence length (SECTION): 001–999 h
• Timer: activation and deactivation
• Recording duration (TIMELONG): 1–720 min
• Cycles (CYCLE): 0–999 days; runs daily when set to 0
• Noise reduction (DENOISE): 0–31
• Automatic gain control (AGC): 0–28
• Microphone range: up to 15 m
• Recording while connected to a power source: Yes
• Charging time: up to 2 h
• Power supply: 5 V via USB
• Charging connection: microUSB
• Package contents: voice recorder with 8 GB memory, instructions in Polish, headphones with a USB-C connection, and a USB-to-USB-C cable