1. 0.96 inch OLED display, 128x64 pixel. 2. One -click recording, convenient operation. 3. Support timing recording setting function, telephone recording function. 4. 300mW stereo speakers, you can clearly hear it within 100 square meters. 5. Sound control function, sensitivity can be adjusted. 6. Password protection function. 7. Continuous recording for 220 hours, standby 500 hours. 8. Size: 98x32x12mm 9. Net weight: about 100g