M9 Long Time Battery Magnetic Earphone Bluetooth In-Ear Sports Mic Waterproof Earplugs Headset for Smartphone

Features:
Ergonomic design, thread on the neck good for sport.
Built-in lithium battery, support for 5 hours, provide up to 16 hours of music / talk endurance.
In Ear design, reducing the world's best bass.
Unique magnetic control, Not easy to fall.
Built-in high sensitivity microphone, clearer voice quality.
With a play button, you can control the music player and make and receive calls and other functions.
 
Specifications:
Color: Silver/Red/Black
Battery: 130mAh
Headset: 10mm NDFEB material
Waterproof: IPX7 
Material: ABS
Bluetooth version: CSR4.1
Job scope: > 10 meters (disabled)
Standby time: 130 hours
Life time: 16 hours
Charging time: 5 hours
Support agreement: A2DP, AVRCP, HSP, HFP
Frequency response: 20 hz - 20 KHZ
 
Contents:
1 x  Bluetooth Earphone
1 x USB Cable charger
1 x Users Manual