Magnetic Adsorption Voice Recorder, 64GB Built-in, 60 Hours Continuous Use, Recording, One-Button Recording, Recorder, Call Recording, Phone Recording, IC Recorder, Android App Compatible, Small, 480 Hours of Recording Data Storage Possible, 2500mAh Battery, Smartphone, Mobile Phone Features magnetic adsorption. A magnetic adsorption sticker is included for mobile phones without magnetic adsorption. It uses Bluetooth 5.0 and can connect to a proprietary app developed in-house. Files can be synchronized on your smartphone, allowing for custom file name settings, sharing, recording using the app, and batch deletion. The large-capacity 64GB memory can store up to 480 hours of recording files, and the built-in 2500mAh battery allows for up to 60 hours of recording. Excellent Convenience with Magnetic Adsorption Even for smartphones without magnetic adsorption, a free magnetic adsorption sticker is included. This allows for convenient use of the magnetic adsorption phone recording pen. Evolution with the Dedicated App Compatible with Bluetooth 5.0, it can connect to our proprietary app. By linking with your smartphone, you can synchronize and operate recording files. Custom file names, sharing, operating the device through the app, and convenient batch deletion are all possible. Large Capacity Memory The 64GB large-capacity memory can safely store up to 480 hours of recording files. No worries about long recording times. Long Recording Time The built-in 2500mAh battery supports up to 60 hours of recording. You can record important information without worrying about running out of battery.