longee Bone Conduction Bluetooth Headphones - Sweatproof HD Stereo Wireless Headset with Multipoint Connection Function for Sports, Driving, Open Back Noise Cancelling Bluetooth Earphones (Black)

Piano paint technology makes headphones good looking and fashionable.
Release your ears, make clearer phone calls. You can use it while you jogging, cycling, driving even working.
Transmission distance up to 15 meters intelligent voice control system let you manage any smartphone or Bluetooth devices via your voice.
Eco-friendly material used for Bluetooth headphones. The materials will not make your skin allergic when you wear long time even wear all the time.
CVC smart noise reduction mode and high sensitivity and noise reduction microphone. Our Bluetooth headset can shield background noise and make phone calls more clearly.
Support NFC connection, you don't need to connect the headset manual, the phone will connect the headset when you just put the phone close to it if your phone built-in NFC function.

Spec.:
Speaker type: bone conduction technology speakers
Bluetooth version: CSR8635 V4.1
Bluetooth class(I/II): II
Battery: 260mAh polymer battery
Play time: up to 8 hours (depend on the actual volume and the sound source)
Charging time: 3 hours
Standby time: up to 10 days around
Effective range: 10 meters (33 ft)
Receiving sensitivity: 88dBm
Impedance: 8Ω
Frequency range: 20-20KHz

LED indicator:
Red LED flashes quickly: low power
Red LED lights on: charging
Blue LED lights on: charging completing
Blue LED and red LED flash alternately: pairing mode
Blue LED flash slowly: connected/calling/playing music
Blue LED flash quickly: incoming call
Blue LED double flashing slowly: the headset does not connect the cellphone

What's in the box:
1 x longee wireless HD stereo sports headset
1 x USB to micro USB charging cable
2 x Sponge ear buds
1 x User manual
1 x PBT bandage

Warranty:
We back our products with worry-free 1 year manufacturer's warranty and friendly customer service, which makes your purchase absolutely risk-free.