1. Material: ABS2. Bluetooth version: V5.3 Jerry 6973D4 chip3. Headphone battery: 25mAh * 24. Charging compartment battery: 300mAh (with protective plate)5. Single headphones usage time: 4 hours6. Charging frequency of the charging compartment: 5-6 times7. Battery lasting time: 28 hours8. Waterproof grade: IPX4
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