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Features of this product: Master Control: Equipped with Noise Reduction Function (Background Sound) (Zhongke Lanxun Solution) Screen: 0.96inch color screen Appearance: Oil-sprayed, feels good to the touch Appearance: Ergonomic design for easy operation Battery: about 180-200 mAh (certified 180 mAh) Battery recording time: about 20 hours Recording mode: Normal and Voice Control (Voice Activation) Interface: Type-C Speaker: Round speaker with loud sound, no distortion, and high-quality sound reproduction.