V11 Wireless Bone Conduction Headphones Bluetooth Sweat Proof with Earbuds Outdoor Sports Headset USB Charging Earphone with Microphone for Driving Cycling Running Gym ( #: V7912 )

Features:
Bone conduction earphones: Transmit sound to the auditory nerve through the bones to protect the eardrum from damage. 
Bio-peptide membrane 10mm large moving coil: Offer Perfect Sound Quality.
Built-in noise reduction microphone: Can provide a clear call effect. With mute button to control the microphone on and off.
Long-lasting battery: Enjoy the whole day from morning to sunset.
Waterproof and sweat-proof: Can be used when you are swimming or running.
BT 5.0 game level chip: High stability and quick transmission.
Also suitable for people Wearing glasses: Memory titanium skeleton which can be fold continuously.

Specification:
Project Name: V11
BT Ice: BK 32664
Speaker Type: Bone conduction technology speaker, 1w dual speaker.150mAh Power battery
Battery: Anti- interference microphones, - 42DB
Play time: 5h
Standby time: 10days
Effective range: 10m (33feets)
Mono/Stereo: Stereo
BT Version: V5.0
Weight: 28g
Bluetooth Class(1/II): Class II
BQB included(V/N): No
BT Profile: Ia2dp/HFP, HSP,AVRCP,GAVDPAVDTP_
Receiving Sensitivity: 88dBm
Frequency range: 20-20KHZ
Charging: Micro USB port and need 2 hours
Appearance color: Black 
Total Size: Approx. 17*13.2cm*5.2*cm / 6.69*5.19*2.04in
Total Weight: Approx. 179g / 6.31oz

Package List:
1 * Bone conduction earphone
1 * Manual
1 * Soundproof earplugs
1 * USB charging cable