Maximum number of files: 999 files Recording format: WAV/MP3 Recording bit rate: 32kbps-1536kbps Recording sampling rate: 24KHz Record current: 10mA Model: SU7 Memory TF card: 64GB Storage Capacity: 8GB - 560Hr(322kbps) / 140Hr (128kbps) / 35Hr(512kbps) / 17.5Hr (1024kbps) / 11.5Hr (1536kbps) 16GB - 1120Hr(322kbps) / 280Hr (128kbps) / 70Hr(512kbps) / 35Hr (1024kbps) / 23Hr (1536kbps) 64GB - 4480Hr(322kbps) / 1120Hr (128kbps) / 280Hr(512kbps) / 140Hr (1024kbps) / 92Hr (1536kbps) 128GB - 5960Hr(322kbps) / 2240Hr (128kbps) / 5650Hr(512kbps) / 280Hr (1024kbps) / 184Hr (1536kbps) Actual maximum output: (L) 9mW+(R) 9mW (32Ohm) Microphone: 3.5pie Stereo jack Earphone: 3.5pie Stereo jack USB: PC Interface USB1.1/USB2.0 Display screen: 128*128 lattice 1.44 inch TFT multicolour Built-in speaker output: 800mW Built-in speakers: Dynamic 26mm,8ohm Built-in MIC: No directional capacitor S: 90dB Polymer battery: 250mah, 3.6V USB input rated voltage / power: 5V300MAH-5V500MAH working temperature: -20℃~60℃ Weight: 42±1g size: 86mm x 22mm x 10.5mm±1mm Battery life (Each full charge) recording 25~80hr; play back 2-8hr (Headphones to listen to) Colour:Black Material:ABS Package Contents: 1 x Digital 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.