describe:1. [Pendant design and one-click recording] Light as a feather, stress-free to carry: you can hang it around your neck and use it anytime and anywhere (note: you need to prepare your own lanyard). Start or stop or save files named with recording date and time with one click for easy file management. Reject complicated steps and record important content anytime and anywhere!2.4 or 16GB Large CapacityThe mini recorder is equipped with 4GB large capacity. Meet your various recording needs. The built-in battery can record continuously for about 35 hours after being fully charged. It supports recording while charging, and has a data protection function that automatically saves when the battery is low.3.Auto Noise Reduction and HD RecordingCan capture farther or lower but clearer sounds. Personalized and fashionable, it is an ideal choice for gift giving.4. [Voice Control Mode] Intelligent voice control recording, starts recording when it recognizes surrounding sounds stops recording when it is quiet. Save power and memory space.5.ApplicationIdeal for lectures, classes, inspiration, meetings, interviews, etc. This makes a great gift for teachers, students, and more.Function:Product name: Mini audio recorderMaterial: purple alloyProduct color: blackProduct size: 4.2x3.7x0.96cm or 1.65x1.45x0.38inNet weight: 0.04kg or 0.088lbsRecording method: recordingRecording time: approximately 35 hoursRecording format: WAVPlay format: MP3 or WMA or WAVSampling rate: 48KHzBattery capacity: 120 mAhpacking list:1 x mini audio recorder1 x instruction manual1 x headset1 x power cord