Features Professional Recording Device Uses professional digital noise reduction with 192Kbps to ensure highquality and clearer audio eperience. Wide Application Free to use this device as a music player, it can also choose loop playback mode. It is a perfect gift for students, professors, teachers, businessmen, writers and bloggers, anyone who loves to record. Powerful Voice Recorder Builtin 170mAh rechargeable lithium battery with micro USB, convenient to charge and record up to 20 hours after full charge. Convenient to Use Support to listen to the recording content with earphones included, or you can listen to the computer via USB, besides, you can write with this pen. High Quality Made of superior zinc alloy, noble, scratchresistant and durable, perfect for recording lectures, meetings, interviews, speeches, etc. Specification Model 022 Size 14 1.28 cm Weight 30 g Recording format WAV Music format MP3, WAV, WMA Frequency 2020 KHZ Recording time About 384 hours 32GB Battery 170mAh lithium battery Working time 20 hours Charging time About 1 hour Microphone Omnidirectional microphone Recording distance 810 m 26.232.8 ft Operating temperature 10 40 Package size 18 9 3.3 cm 7 3.5 1.2 in Package weight 110 g 3.8 oz Packing list 1 Recording device without TF card 1 Earphone 1 USB cable 1 3.5 mm jack USB adapter