Products DescriptionSpecification: Product Type: HIFI-MP3 Resolution: OLED 128X64 Batteries: environmentally friendly polymer lithium batteries Charging time: 1.5 hours Recording format: WAV Play format: MP3/WMA/WAV/OGG/APE/FLAC/AAC Size: 41mm*41mm*14mm Product weight: 36g Frequency response: 20Hz-20KHz
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