Blue String Ear True Wireless Earphone Genie True Stereo Bluetooth Auto-Sensing Earphone $ 20.18 Product information: Transmission range: 10 meters Function: battery display, call function, music support, multi-point connection Bluetooth protocol: 5.0 Channel: stereo How to use: Earplug type Single or dual ear: Bilateral stereo Colour: Black Bluetooth version: 5.0 Frequency range: 2.4GHz-2 48GHz Support protocol: A2DP, AVRC, HSP, HFP Frequency response range: 20Hz-20KHz Standby time: about 1000 hours Music/talk time: about 5-6 hours Charging time: about 1 hour for earphones, about 2 hours for charging box Input voltage/current: 5V/>100mA Output power: 7mW+7mw
