1The voice recorder is light and compact, easy to carry, practical and convenient. 2Recorder pen is easy to use, oneclick start/save recording, suitable for meeting use. 3You can connect to the APP to convert voice to text messages. You can speak the recorded voice to convert the text and translate it into more than 20 languages. 416G ROM and 500 hours of builtin cloud storage. APP supports for Android 7.0 and above, for iOS 9.0, for iPhone 6S and above. 5You can use the voice recorder without connecting to the APP and then use the APP's voice to transcribe text when you have time. 1 hour of recording and transcription only takes 5 minutes. Item Type: Voice Recorder Pen Material: Aluminum Alloy CNC Microphone: Dual MIC Built-in Storage Space: 16G Built-in Storage Type: EMMC Flash Connection Method: bluetooth BLE4.2 and above, for Android 7.0 operating system and above, for IOS9.0, for iPhone 6S and above. Built-in Battery: Lithium battery, 280mAh Charging Voltage: 5V, 0.5A Product Size: Approx. 65x19x16mm / 2.6x0.7x0.6in 1 x Manual 1 x Recorder Pen 1 x Charging Cable There are two ways to calculate the capacity of the voice recorder. The voice recorder manufacturer generally calculates in the base 1000, that is, 1000M=1GB; computer and mobile phone systems use 1024 to calculate, and 1024M=1G. In addition, system files will also be occupies a small amount of space. The actual available space of the recorder is about 14.5G.