1. Material: ABS2. Horn: copper ring horn3. Chip: Zhongkelunxun4. Battery: 130mAh with protective plate5. Listening time: about 13 hours
1. Material: ABS2. Horn: copper ring horn3. Chip: Zhongkelunxun4. Battery: 130mAh with protective plate5. Listening time: about 13 hours
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