Opened only. I am selling it because I did not use it. [Product Description] Wireless Microphone (High-Quality Sound, Onboard Recording) [Main Specifications] ■ Recording Formats ・Mono / Stereo / Safety Track ■ Communication Method ・2.4GHz Digital ・Maximum Communication Distance: Approximately 300m (in an environment without obstacles) ■ Microphone Performance ・Omnidirectional ・Built-in Condenser Microphone ・Maximum Sound Pressure Level: 115dB SPL ・Distortion: 0.1% or less ・Frequency Response: 20Hz〜20kHz ・S/N Ratio: 90dB or more ■ Audio Quality ・Sampling Rate: 48kHz ・Bit Rate: 24bit / 32bit ■ Recording & Storage ・Onboard Recording Supported ・Internal Storage: 8GB ・Data Transfer: USB-C ■ Power & Battery ・Built-in Lithium-ion Battery ・Battery Capacity: 220mAh ・Continuous Operating Time 　- Approximately 9 hours (Noise Canceling OFF, Recording OFF) 　- Approximately 6 hours (Noise Canceling ON, Recording ON) ・Charging Time: Approximately 1.75 hours ■ Other ・Antenna: PIFA (Planar Inverted-F Antenna) ・RF Output: Less than 10dBm ・Operating Temperature: -20℃〜50℃ ・Storage Temperature: -20℃〜50℃ [Recommended Uses] ・YouTube / Vlog / Interviews ・Video Recording / Streaming / Narration ・Outdoor Filming / Event Recording