Description1. Bluetooth 5.4; Chip: Bluetrum AB5656B 2. Battery capacity: 300 mAh; Charging time: 1.5 hours 3. Usage time: 32 hours; Standby time: 180 hours 4. Material: ABS silicone PU leather 5. Dimensions: 196 * 190 * 89 mm; Weight: 197 g 6. Open design with zero contact between ears and earmuffs 7. Supports prompt sounds in Chinese and English: press the power button twice when not associated
