B21 BT 5.0 Bone Conduction Headphones Outdoor Sports Swimming Headset IPX8 Waterproof 8G

Features:
Bone Conduction Design:
The sound transmits through the bone to the auditory nerve, no need to put into the ear, no eardrum damage, good for the user to avoid ear disease and hearing losing.
Comes With 8G/32G Memory:
Comes with 8G/32G(Optional) of independent memory, which can play lossless music. MP3 playback mode is supported when BT is not connected, mode can also be switched.
IPX8 Waterproof Born for Sports:
IPX8 Sweat-resistant and 47g light-weight design immerse you in sports and music, suitable for swimming, walking, hiking, running, climbing, skating, driving, and other activities.
BT 5.0 Connection:
BT 5.0 ensures high data transfer speed, stable connection, and low power consumption. Free to enjoy hands-free calls or BT music via BT connection.
Long Battery Life:
200mAh rechargeable Lithium battery provides up to 5 hours of playback time on one full charge and the standby time can last to 120 hours.