Unisar Wireless Digital TV Audio Assisted Listening Device System TV Listener Dh1310 Extra Headset Extra Headset for Unisar DH1310 Hearing aid compatible,Rechargeable battery, 2 hours for a full recharge 72 feet open range Made of lightweight plastic for easy use To sync this headset with your existing base please follow instructions in your user's manual CHECK OUT OUR YOUTUBE CHANNEL FOR STEP BY STEP SET UP INSTRUCTIONAL VIDEO