factory direct sales m30 mp3 player student lossless recording pen hd noise reduction portable e-book walkman 厂家直销M30 MP3播放器学生无损录音笔高清降噪随身电子书随身听

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brand: neutral

recording time: 16

battery: lithium battery

shell material: abs, zinc alloy

recording format: wav

model: m30

item no.: m30

origin: shenzhen, guangdong

source category: spot goods

product type: brand new

recording mode: boot recording shutdown save

maximum number of recording files: 999

memory card type: extended card is not supported.

display screen: oled screen

transmission interface: usb 2.0

microphone: bidirectional

quantity of microphone: three-way

recording distance: 5-10 m

video recording: video shooting is not supported.

product size: 42*42 * 13mm

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Update time：20261006212047

factory direct sales m30 mp3 player student lossless recording pen hd noise reduction portable e-book walkman 厂家直销M30 MP3播放器学生无损录音笔高清降噪 随身电子书随身听