B08MZH5CWT Avantree HT280 Dual Link Bundle – Digital 2.4G Wireless TV Headphones (Set of 2) w/Transmitter Charging Dock, Share TV Watching, Enhanced High Volume Headset for Seniors & Hearing Impaired, No Delay

Supports dual link with no audio delay. Simply add a 2nd pair of headphones to HT280 to share TV / movies with your family / friend.
This headphone is the original headphone from HT280, up to 100 headphones can work with the transmitter dock from HT280 simultaneously! Add one or more headphones to the HT280 to achieve the purpose of watching TV together with your family / friends.
This headphone can only work with the transmitter dock from HT280, it CANNOT work with any other Bluetooth enabled device, like your phone / tablet / laptop.
Simply put it back on the transmitter dock for charging after each use, no more low-battery anxiety!
The battery is not only rechargeable but also replaceable, no more worries on the battery life. IMPORTANT: Batteries can only be replaced with original Avantree HT280 batteries. Any other rechargeable batteries will not work. If batteries need to be replaced please ask Avantree for help.