Bluetooth headset Built-in 3.7V 400mAh polymer lithium battery, supports TF card playback, FM radio, Bluetooth 5.0. Suitable for music, movies, games, and language learning. Product Description ...View More
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Built-in 3.7V 400mAh Polymer Lithium Battery Supports TF Card Playback FM Radio Bluetooth 5.0 Headphone Earphone For Music Movie Game