Working Time: About 10 hours on one Charge. Can store up to 96 hours of audio. Charging: Connect the USB interface to computer. Digital Voice Recorders that are compact and pocket sized, unobtrusive and simple to operate Clear Voice Recording.You can use it as a portable audio recorder to record anything, or simply use it as a MP3 player to listen to your favorite songs. Straightforward operation - Features auto save so your recordings are saved instantly, when the earphones are plugged in, it automatically enters playback mode and you can review your file. MP3 Conversion: Insert the headphone into, and short-press Button (-) to convert MP3 playing mode when the indicator light turns red and flashes up slowly. Charging RecordingWhen recording, insert a USB cable intoto connect the computer or the power supply, which means it is charging for recording. When charging, both the red light and the blue light flashes up and the latter staying on for a long time means charging full. The total charging time is around 1 hours. Time SynchronizationWhen connecting the computer via USB, open the drive to run the application, SetTime. Connecting the ComputerInserted a USB cable into to connect the computer and find the right drive to save and open files. We are striving to provide the most reliable and cost-effective products for our customers. The item "4PCS Mini Spy Audio Recorder Voice Listening Devices 8GB Bug Recording Mp3 US JJ" is in sale since Saturday, July 3, 2021. This item is in the category "Business & Industrial\Office\Office Equipment\Dictation & Stenography\Dictaphones & Voice Recorders". The seller is "joint2018" and is located in Monroe Township, New Jersey. This item can be shipped to United States.