F9 Earbuds Mini Tws HiFi Headphone Sport Earphone Headset Mini TWS 5.1 Wireless Earbuds

Material ABS TYPE True Wireless (TWS) wireless charger Stereo Headphone Supports HSP/HFP/A2DP/AVRCP protocol Frequency Response Range  21Hz-18KHZ Up to 10 meters Built-in high-sensitivity microphone(-38dB) Sensitivity 95dB Storage box battery capacity 300MAH Headphone charging time 40 mins Storage box charging time 1 hour Clolors black Charging voltage 3.7V Resistance 32Ω