Bluetooth Version:V 5.0 +EDR. Working Distance: 10 m. Driver Unit :Ø40 mm. Impedance: 32Ω. Frequency Response: 20 Hz-20KHz. Battery capacity: 200 mAh. Music Play/Talk Time: Up to 6 hours. Weight: 192 Gms. Color: Black. #business_gifts, #corporate_gifts, #promotional_gifts, #promotional_gifts_items, #promotional_gifts_p...