Screen: 1.44-inch TFT color screen Recording format and sampling rate: WAV format (32Kbps-1536Kbps) Recording quality: WAV 512Kbps (default) Supports multiple formats of music playback Frequency: 24KHz Colour:Black Material:Zinc Alloy Recording power: 4.8mA-12mA Support: recording, voice control, clock, timed recording, voice and music playback, repeat, password, low power save shutdown and other functions Actual maximum output: (L) 9mW+(R) 9mW (32Ohm) External input: headphone 3.5pie stereo jack microphone line 3.5pie jack USB: PC Interface USB1.1/USB2.0 FULL Speed Built-in speaker output: 800mW Built-in speaker: Dynamic 8ohm, 1W 20mmx30mm Built-in MIC: Omnidirectional capacitor MIC S/N (signal-to-noise ratio): 90dB Power supply: Rated voltage lithium battery (600MA): 3.4V-4.2V USB input rated voltage/power: 5V500MAH-5V1000MAH Storage: Embedded flash memory or external TF card Operating temperature: -10~50 Weight: About 93g (bare metal) Dimensions: 105mmx37mmx12mm Battery life: About 120 hours of recording for built-in version/60 hours for external version (512Kbps) 50 hours of playback (plug in headphones) Package Contents: 1 set * 64G voice recorder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.