Features 1、Aluminum Alloy Keychain: Aluminum alloy keychain with metal ring for easy connection with keys, built in recording function allows you to record important conversations, easy to carry. simple recording. 2、Voice Activated: Flip the switch to the top to activate the voice control mode, recording only when there is sound, not recording when it is muted, reducing vacuum and whispering, saving energy and storage space. 3、15H: The audio recorder can record continuously for 15 hours or play continuously for 10 hours, voice activated standby for 40 hours, and the built in large capacity battery makes you no longer have to worry about running out of power. 4、Easy Data Transfer: Connect to PC via USB cable, drag and drop files to PC and you can play the files on PC. Very convenient! 5、Package Accessories: The package contains 1 audio recorder, 1 cable, and 1 earphones that meet your needs to the biggest extent. Specification Item Type: Audio Recorder RAM: 16 GB Recording Time: 15 Hours Recording Format: WAV Battery Type: Built in Single 3.7V 160mAh Polymer Lithium Battery (shipped with built in battery) Battery Mode: 502020 Battery Capacity: 160mAh Recording Bit Rate: 192Kbps USB Port: USB 2.0 Frequency Response: 20Hz - 20kHz Maximum Audio Output Power: 5mW Working Temperature: 0 - 40 ℃ Package List 1 x Audio Recorder 1 x Data Cable 1 x Earphones 1 x Chinese and English Manual