Note: Manual measurement, please allow some errors. Specification: Item Type: Small Voice Recorder_x000D_Material: Metal, Electronics_x000D_Size: Approx. 4.3 x 2.2 x 0.3cm / 1.7 x 0.9 x 0.1in_x000D_Model: Q1_x000D_Battery Type: Built in 300mAh Lithium Battery (Included) Features: 1LONG TIME RECORDING: Small digital recorder is equipped with rechargeable battery, after charging (about 2 hours), it can record continuously for up to 8 hours. If the battery is low, the data can be saved automatically. 2CLEAR RECORDING: High performance 360 directional microphone can pick up distant sounds more clearly. Built in DSP noise reduction chip automatically reduces ambient noise. Supported bit rates are 3072kbps, 1536kbps, 512kbps. 3EASY TO OPERATE: Slide the button to start recording and save recording. Recording can be quickly recorded after the recorder is turned on. Built in speaker can play the recording directly (with earphone will be better). 4VOICE ACTIVATED: After turning on the voice activated function, the recorder will automatically record when the surrounding sound up to a certain decibel, and stop recording when there is no sound, saving storage space. 5MULTI FUNCTIONAL: This recording device can be set up for timed recording, monitoring recording, deleting recording, AB repeating and more. Perfect for lectures, meetings, interviews, classes, etc. PackageList: 1 x SmallVoiceRecorder 1 xWiredEarphone 1 x Charging Cable 1 x User Manual