continuously 10 hours on a single charge. There’s a back splint which lets you clip it to your collar or notebook, and it can comes with earphones to listen to your recordings right from the device - perfect for capturing those conversations that matter to you. ★Clear Conversation With Less Noise: With accuracy reaching as high as 97%, we use high sensitivity microphone and noise cancellation to focus on the sound of your voice, make sure it is crystal clear without unwanted noise nearby. Specifications: Color: Black and blue Support Language: 38 languages and 48 accents                                                                               Built-in Lithium Battery: 3.7V/300mAh                                                                   Build-in Storage Capacity: 16G                                        Connection Method: BT 5.0 (support BT 4.2 connection) Charging Voltage: 5V-0.5A     Standby Time: 30 days Recording Time: 10 hours                             Microphones: Dual mic array                                                    Interface Connect: Type-C                                               Build-in Storage Type: EMMC Flash    Connectivity: BT BLE 4.2 or above,operating system Android 7.0 or above,iOS 9.0,iPhone 6S or above   Product Size: 6.2*1.8*1.5cm / 2.4*0.7*0.6in Product Weight: 17g / 0.6oz Package Size: 13.6 *6.1*3.8cm / 5.4*2.4*1.5in Package Weight: 126g / 4.4oz Notes: How to download the APP? 1)Support iOS & Android system, scan the corresponding QR code to download the "AIvRecorder" APP 2)You can also search  "AIvRecorder" APP and download in the APP Store & Google Play 3)Please refer to the user manual Packing List: 1 * Voice Recorder 1 * USB Cable 1 * User Manual