Cynaps Classic Bluetooth Bone Conduction Cap with Removable Module - Available in Black, Grey and Stealth Add magnetic charging?:No you can take calls and

you can take calls and listen to music through vibration

or you can install into any of our Cynaps branded caps which come with an existing pocket

helmet or hardhat

It varies according to the volume level

Cynaps Classic Bluetooth Bone Conduction Cap with Removable Module - Available in Black, Grey and Stealth Add magnetic charging?:No you can take calls andTake calls and listen to music through vibration, leaving your ears free to hear your surroundings. Caps are sweat absorbing, keeping you cool and dry all day. It's easy to remove the electronics to wash the cap, or to re install them into any hat, helmet or hardhat. Battery life: Over 8 hours of continuous audio listening on average volume (varies by volume level) Maximum volume output: 85dB Charging time: around 1 hour Bluetooth Version: 4. 2