Item Type: Voice Recorder Watch Material: ABS Recording Format: WAV Playback Format: MP3, WMA, WAV Built in Polymer Lithium Battery: 110mAh1Noise Reduction: Voice recorder watch has a built in professional noise reduction chip to truly restore live sound. Easy to operate, fashionable and convenient. 2Voice Activated: This recorder supports voice activated, automatically record with sound, automatically pause without sound, save power and memory. 3With Timestamp: The recorder watch can accurately record the generation time and end time of each recording, which is perfect for electronic commerce and legal forensics. 4Rechargeable: 110mAh battery built into voice recorder bracelet, connectable to rechargeable devices, computers, etc, supports recording while charging. 5Long Battery Life: Rechargeable sound recorder watch supports 20 hours of continuous recording and up to 30 days of standby time.1 x VoiceRecorderWatch1 x Charging Cable1 x Earphone1 x Instruction Manual