Features: Lossless 32kbps~192kbps Sound recorder, intelligent noise cancellation, professional sound quality. Double build-in dynamic noise cancelling microphones effectively reduce background noise. Different sound recording, 7 gear adjust, meet your various need. Small in size, light in weight, easy to carry. Build-in 200mAh battery, long working time. Specifications: Material: ABS+PC Color: black Capacity: 16GB, 32GB, 64GB(optional) Size: about 2.5x2.3x0.95cm/0.98x0.91x0.37inch Battery model: 502025 Number of batteries: 1Pc Battery capacity: 200mAh Input voltages: DC5V Charging method: Connect the rate 5V1A adapter to the data cable for charging Charging time: 1.5H Working current: 7mA~8mA Battery service life: record 30H, play 20H Recording format: WAV Bit rate: 32kbps~192kbps Sound controlled recording: 20~75db, adjustable in 7 gear, selectable to turn down Waterproof rating: IP30 Package Includes: 1pc Sound Activated Recorder note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.