Windshear Ear Hook Bone Conduction Bluetooth V4.0 Headphone Headset with Mic, Support Calling Function(Black) Lead Time: 1~3 Days.

Features 1. Bone conduction technology (Not In-Ear type) 2. Do not hurt your ears! 3. Healthier: Prevent bacteria inside your ears 4. Safer driving: Do not block sound when making phone calls / listening to music 5. Comfortable wearing 6. Size adjustable: Suitable for different head sizes Indicator Light Status 1. Red light flashing rapidly: Lack of power 2. Red Light on: Charging 3. Blue Light on: Full charged 4. Blue and red lights flashing: Matching 5. Blue light double flash slowly: Fail to match, maybe the device is power off, or the distance of both is over 15m 6. Blue light flash slowly: Matched / dialing / playing audio 7. Blue light flashing rapidly: Call coming