Features: Excellent Recording Quality - Built-in noise reduction microphone, MP3 format recording and 128kbps sound quality. You can buy memory cards with different storage capacity and insert it into the recorder to record(TF card is not included). Voice Control/Line-in Function - Comes with voice control function, Turn it on and will auto recording when there have sound. Support line with other equipment such as telephone to recording. Adjust the volume, fast forward and fast back, and A-B repeat operation functions you can operate. Powerful Battery - The voice recorder with built-in 270mAh rechargeable battery can record continuously for 10 hours. With 3 options of 8GB/16GB/32GB of internal storage, you can save up to 144hrs/288hrs/576hrs of recordings. Easy to Operate - One button for one steps, 28x25mm code screen with backlight, convenient to recording and reading the font at night. You can delete the files on the recorder, and connect with the computer via USB cable to download and upload. Available in a Variety of Scenarios - Ideal for your business meetings, negotiations, interviews, presentations, conferences, semester classes, presentations, group discussions, etc., accurately record all the details. Specification: Material: ABS Color: Black Screen Size: 28x25mm Memory Card: No memory card/8GB/16GB/32GB (Optional) Recording Time Saving Capacity: 144hrs(8GB), 288hrs(16GB), 576hrs(32GB) Recording Mode: Mic Recording Recording Format: MP3 Recording Sampling Bit Rate: 128kbps Battery: 3.7V 270MAH Lithium Battery Recording Time: 10hrs(30MA), 30hrs(9MA,with headphone) Support System: Windows98\2000\XP and so on Product Size: 97 x 33 x 13mm/4 x 1.3 x 0.5in Product Weight: 33g Package Size: 15.5 x 8 x 4cm/6.1 x 3.1 x 1.6in Package Weight: 126g/4.4oz Packing List: 1 x Voice Recorder 1 x Earphone 1 x USB Cable 1 x User Manual