A4Tech BH350C

Wireless Headset A4tech BH350C, 40 mm driver, 32 Ohm, 100db, 50h, Foldable, ENC Omni-Directional MIC, Leather Ear Pads, BT 5.3, Black. PECIFICATIONS CONNECTION Bluetooth Version v5.3Operating Range Up to 10m (32 feet)Built-in Battery 500mAh Lithium BatteryPlayback Time 50H (ANC Off), 30H (ANC On)HEADPHONE Speaker Unit 40mm Hybrid DiaphragmFrequency 20Hz - 20KHzlmpedance 32ohmSensitivity 100dBMICROPHONE Mic. Type ENC Omni-DirectionalFrequency 100Hz - 10KHzSensitivity -42dBCABLE USB Type-C Charging Cable 50 cm