Number of files: 199 files Recording format: WAV format MP3 format Recording quality: WAV512KBPS (default) Recording bit rate: 192KBPS-1536KBPS Effective distance: 30M Recording frequency: 24HZ Video screen light off recording power: 12MA-20MA Actual maximum output: (L) 9MW+(R) 9MW (320HM) External input: 3.5-inch stereo jack, LINE-IN 3.5-inch jack USB: PC INTERFACE USB1.1/USB2.0 FULL SPEED Built-in speaker: DYNAMIC 80HM. IW 26MM" 18MM S/N (noise ratio): 9ODB Power supply mode: rated voltage lithium battery 3.6V-4.2V, 500MAH capacity: USB input rated voltage / power: 5V 300MA-5V 1A Storage: embedded flash or TF card Operating temperature: -40°С-60°C Size: 101MM X 33.5MM X 10.5MM Battery life: Recording 35 hours (512KBPS) Play: Insert the headphones for about 45 hours and put it for about 8 hours.
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