Features:  Professional Recording Device - Adopting professional digital noise reduction with 192Kbps for ensuring high-quality and more clear audio experience.  Widely Used - Free to use this device as music player, it also can select the loop playing mode. It's a prefect gift for students, professor, teacher, businessman, writer and blogger, anyone who loves to record    Powerful Voice Recorder - Built-in 170mAh rechargeable Lithium battery with micro USB, convenient to recharge and record up to 20h after fully charged. And with 32GB memory card can store 384hrs voice file.  Convenient to Use - Support to listen to the recording content with earplug (including), or you can listen on the computer via USB, furthermore, you can write by this pen.  High-quality - Made of superior zinc alloy, noble, scratch-proof and durable, perfect for recording lectures, meetings, interviews, speeches etc.    Specification:  Model: 022  Size: 14 x 1.28cm  Weight: 30g  Record Format: WAV  Music format: MP3,WAV,WMA  Frequency: 20-20 KHZ  Recording Time: About 384hrs (32GB)  Battery: 170mAh Lithium Battery  Working Time: 20hrs  Charging Time: About 1 hour  Microphone: Omni-directional Microphone  Recording Distance: 8-10m/26.2-32.8ft  Operating temperature: -10°- 40°  Package Size: 18 x 9 x 3.3cm/7 x 3.5 x 1.2in  Package Weight: 110g/3.8oz    Packing List:  1 x Recording Device (With 32G TF card)  1 x Earphone  1 x USB Cable  1 x 3.5mm jack - USB Adapter