Features:
Bluetooth version 5.0
Supports A2DP v1.3, AVRCP v1.5, HPF v1.6, HSP v1.2 protocols
Noise reduction function with CVC6.0 technology
Frequency range of 20Hz-20kHz
200 mAh lithium battery
Music playback time of 4-5 hours
Talk time of 5-7 hours
Standby time of 120 hours
1.5 hour charging time
Magnetic charging port
Wireless transmission distance of 10-15 meters (in open areas)

Package Includes:
1 x B20 Magnetic Suction Charging Bone Conduction Wireless Swimming Earphone Red