tws i11 5.0

Impedance: 32 ohms Bluetooth version: Bluetooth v5.0 + EDR Power level: Level II Output power: 30 MW Bluetooth distance: 10 m barrier Frequency response: 20Hz 20000 working voltage range: 3.0 V-4.2 V. Microphone sensitivity: -42dB with A2DP / AVRCP high quality stereo audio transmission and remote control protocol powerful noise cancellation circuit (active noise reduction) talk time is about 2-3 hours music time is about 2-3 hours 7 days free replacement warranty in case of product defect.