Features: -Metal case, mini fuselage, durable and exquisite.  -Start recording when power on, Save recording when shut down, easy operation.  -Voice-activated recording, Recording is automatically started when sound is detected, and recording is paused when there is no sound.  -Supports the MP3WAV/WMA music play, interesting and practicable.  -The name of the recording file is the recording time and supports file encryption.     Specification: Dimensions:60*35*4mm;  Weight:10g;  Color:Black;  Material:Metal;  Built-in magnetism:yes;  Memory:Built-in 8GB ;  8GB storage of recording files for 96 hours;  Recording format: WAV;  Bitrate:192Kbps;  NSR:≥70db;  Frequency:20Hz-20KHz;  Microphone:large-scale high sensitivity mic;  Working time:Continue Recordingaround 22 hours. Long recording mode about 30 hours;  Music format:MP3, WAV, WMA;  Recording mode:Voice-activated/ manual control;  Voice-activated sensitivity: Can not adjust;  Earphone:3.5mm stereo earphone;  Built-in battery:built-in lithium polymer battery;  Listening to songs with headphones can last for 28 hours;  Connect: Micro USB2.0/OTG;  Working Temperature:-5~45℃;     Package Includes: 1 x Digital Voice Recorder MP3;  1 x USB Cable;  1 x Earphone;  1 x User manual