I38S Wireless Earphone User Manual
Product specification: Bluetooth version: V5.0 Effective distance: ≥12m Diameter of trumpet: Φ10mm Impedance: 16Ω Horn sensitivity: -42dB Frequency response: 20Hz -20KHz Playing time: about 4 hours (50% volume) Battery capacity: 30mAh for earphone and 400mAh for charging case Charging interface: Type-C, 5V-1A Accessories list: Bluetooth earphone x 2 Charging cable x 1 Charging box x … Read more
