(W) Sofia i7S Wireless Earbuds Bluetooth V4.2 Stereo Earphone Earbuds Air Pods Headset

Driver: 15mmImpedance: 32 OHMBluetooth version: Bluetooth v4.1 + EDRBluetooth use band: 2.4GHzPower level: CLASS IIOutput power: 30mWBluetooth distance: 10 meters barrierFrequency response: 20-20000HzOperating voltage range: 3.0V-4.2VMitou sensitivity: -42dBWith A2DP / AVRCP high quality stereo audio transmission and remote control protocolPowerful noise de-noising circuit (active noise reduction)switch between Chinese and English (boot does not connect Bluetooth state, press the switch 2 times, hear the tone switch successfully)Charging time about 1-2 hour (power indicator charging: red light, full power: red light off (blue light).)Product Size: Length 25MM. Width 15MM. High 35mmTalk time is about 4-5 hoursmusic time about 4-5 hoursStandby time is about 120 hourThe charging time is about 60 minutesBattery capacity 60MAH

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