Features: HD Recording Quality - Built-in noise reduction microphone, support WAV or MP3 format recording and default 512kbps sound quality. With 16GB storage capacity, it can save 72hrs records. Practical Design - Super mini digital recorder, built-in 110mAh battery which support 25hrs continuous working, extremely portable for carrying and storing. Intelligent Recording Function - Push to record, easy to start work. Support voice control, automatic recording when there is sound, automatic pause when there is no sound. With password function to protect your record files. Note just a Recording Device - Insert earphone into type-C port for playback recording file / listening to music. Wide Applications - Ideal for your business meetings, negotiations, interviews, presentations, conferences, semester classes, presentations, group discussions, etc., accurately record all the details. Specification: Model: sk-588 Storage Capacity: 16GB Size: 52x26x8mm Weight: 15g Voltage: 3.7V Recording format: Default 512Kbps Playback time: About 5-6 hours Full charge continuous recording: about 25 hours Battery: 110MA Display screen: None Memory: Embedded Headset: TYPE-C universal interface Operating temperature: - 5 to+40 degrees Celsius Signal-to-noise ratio: ＞70dB USB: TYPE-C interface Recording current: 5MA (milliampere) Music support：MP3/WAV format Headphone output: 10MW+10MW (320HM) Degree of distortion: 0.05% System support: Windows/98/2000/XP/7/10 Frequency response: 20Hz to 20KHz Package Size: 10x8x4.5cm/4x3.1x1.7in Package Weight: 102g/3.5oz Packing List: 1 x Digital Recorder 1 x Charge Cable 1 x Earphone 1 x User Manual