1. Support wireless BT headset connection, speakers. In the absence of obstacles, you can enjoy a pleasant wireless music playback experience within a radius of 10 meters. Multifunctional MP3 player with FM radio/recorder/video player/text reading.2. Highly sensitive Contact screen and lock screen keys: 1.8-inch screen and highly sensitive Contact keys make the entire mini mp3 player crystal clear and easier to operate. It is convenient to press the power button to lock the screen3. When putting this music player in your pocket, you can lock the button to avoid wrong operation. It is very suitable for recreation and study, outdoor and gym fitness.4. HiFi sound effects and FM radio: Mature HiFi technology brings you lossless music. Try the FM radio function, you can listen to news/story/music, it will give you more choices.5. Voice recorder-One-key recording: When you need to record important information in a class or meeting, one-key recording technology can help you record quickly in one step. High-sensitivity Contact screen buttons, lightly Contact to instantly present music. Built-in memory, the player provides plenty of space for your songs and books.Product name: M22 MP3 playerBattery: Environmentally friendly polymer lithium batteryRecording time: about 35 hoursPlaying time: about 30 hours (plug in headphones)Recording method: one-key recording, one-key savingRecording format: support MP3, WAV formatWAV digits: 1536kbpsMP3 digits: 384kbpsMusic player: MP3, WMA, OGG, APE, FLAC, WAV, AAC-LC, ACELPVideo playback supports AMV, AVI (Video files need to be converted by conversion tools)Picture browsing support Support JPEG, BMP, GIF format browsingBluetooth module: BlueTooth4.2WMA bit rate: 32kbps-384kbpsFrequency response: 20Hz to 20KHzSignal to noise ratio: 90dBHeadphone output: (L)9mW+(R)9mW (320hm)Headphone jack: 3.5MMUSB interface: Micro-USBControl panel: millisecond capacitive Contact panel (support backlight)Fiction Text: TXTcolour: blackMaterial: aluminum alloyPackage Contents:1 x MP3 player1 x USB cable1 x earphone1 x English manual