2.4 GHz transmission frequency, Bluetooth wireless, around 33 ft. operating range. Operates up to 8 hrs. on built-in rechargeable batteries. Has headset power indicator, low battery indicator, and battery recharge indicator. Manufacturer claims water resistance. Allows simultaneous connection of two Bluetooth devices, can only stream from one device at a time, but allows switching between two connected devices. Bluetooth connected Apple mobile devices using iOS Version 5 and above will show the battery level.
SOL Republic Shadow Wireless headphone - Info & Customer Reviews