Headset battery capacity: 40 mAh
Storage box battery capacity: 2000 mA(i7)300mA(FAN7)
Charging time: 30 minutes
Bluetooth version: V4.1
Speaker: φ10mm * 2 Hi-Fi stereo
Bluetooth distance: 10 meters
Headphone playback time: 120 minutes / 0.09Wh
Voltage: 3.7V
Impedance: 32
Headphone battery output: 0.09W
Features: Bluetooth music player Bluetooth calls (answer / end / reject)

• 1:Bluetooth 4.1 streaming technology, Up to 60ft of the Bluetooth Range, able to offer quality sound without a single cable between the mini headphones or the device to create a genuine feeling of freedom and flexibility
• 2:Clean,clear and Best Stereo Bass sound is created by 8.6mm high power drivers that deliver rich bass, balanced mid-range and crystal clear treble frequencies for an authentic musical experience across a frequency range of 6Hz - 22kHz
• 3:Built in 2000mah(i7)or300mah(fan7) with the charger case

1:Bluetooth 4.1 streaming technology, Up to 60ft of the Bluetooth Range, able to offer quality sound without a single cable between the mini headphones or the device to create a genuine feeling of freedom and flexibilityzuanshangshi