4GB Mini Voice Recorder Keychain Audio Recorder for Lecture Interview Meeting Class HD Noise Reduction Feature Product Name Mini Voice Recorder Material ABS Product Color Black Product Size 2.551.45.9cm10.552.32in Package Size 10.76.32.9cm4.212.481.14in Net Weight 0.016kg0.035lbs Gross Weight 0.058kg0.128lbs Recording Method Onebutton Recording Recording Time About 35 Hours Recording Format WAVMP3 Playback Format MP3WMAWAV Sampling Frequency 48KHz Battery Capacity 180 mAh Stressfree to Carry You can hang it on your keys, wallet, phone, backpack and use it anywhere. One button can start or stopsave the file which is named by recording date and time, enabling easy file management. Reject complicated steps and record important content anytime, anywhere 4GB Large Capacity Mini voice recorder is equipped with a large capacity of 4GB. Meet your various recording needs. Builtin battery can record continuously for about 35 hours after full charge. Supports recording while charging and has data protection function, automatically saved when the battery is low. Automatic Noise Reduction HD Recording Which can capture longerlower but clearer sound. Personal and stylish, an ideal choice for gifts. Voice Activated Mode Intelligent voice activated recording, it starts recording when it recognizes the sound around stops recording when it is quiet. Save the amount of electricity and memory space. Applications Ideal for lecture, class, inspiration, meeting, interview and more. It is a wonderful gift for teachers, students, etc. Package Includes 1 Mini Voice Recorder 1 User Manual 1 Headset 1 Power Cable