Mucro L36 Foldable Bluetooth Headset with SD Card Slot & Storage Box(Black)

Features: 1. Support Bluetooth, SD card (not included), 3.5mm AUX cable (not included) to play music 2. The head beam can be telescopically adjusted, suitable for head circumferences of different sizes 3. Leather earmuffs, soft and comfortable to wear 4. Foldable for easy storage 5. With storage box Product Specifications: 1. Chip: Jerry AC6955F 2. Bluetooth version: 5.0 3. Transmission distance: about 10m 4. Frequency response: 20-20KHz 5. Speaker sensitivity: 110dB+/-3dB (at 1KHz/0.178V) 6. Speaker specifications: 40mm 19U 32 ohms 7. Rated power: 10mW 8. Power: 20mW (max) 9. Battery specification: 300mAh 10. Playing time: about 6 hours 11. Charging time: about 2 hours 12. Microphone sensitivity: -42+/-3dB 13. Charging requirements: DC 5V-100mA 14. Bluetooth protocol: A2DP1.3, ACRCP1.5, HFP1.5, SSP1.2, HSP1.2 15. Charging interface: Micro USB