Pros:

one of the best options under 30 dollars.

6 Hours Music Time

handles Mic Hands Free for Any Bluetooth-enabled Devices

The neckband design makes it fit tightly on ears even during heavy activities.

The design is ergonomic  and modish.

The sound is not very powerful but still effective enough to please you.  more info

Waterproof IP66 Sweatproof Outdoors Sports Wireless Headsets KAYSION Bluetooth V 4.1 Earbuds Earphones Headphones with 100 Hours Super long Standby Time,6 Hours Music Time ,Support Mic

Waterproof IP66 Sweatproof Outdoors Sports Wireless Headsets KAYSION Bluetooth V 4.1 Earbuds Earphones Headphones with 100 Hours Super long Standby Time,6 Hours Music Time ,Support Mic> more info

Waterproof IP66 Sweatproof Outdoors Sports Wireless Headsets KAYSION Bluetooth V 4.1 Earbuds Earphones Headphones with 100 Hours Super long Standby Time,6 Hours Music Time